What is the best element ever?
- Binary Search Algorithm - Binary search algorithm compares the target value to the middle of the array.
- Breadth-First Search (BFS) Algorithm - Breadth-First Search is used to solve many problems including the shortest path in a graph, solving puzzles and games
- Depth First Search (DFS) Algorithm - Depth First Traversal (or Search) fo
What element has the highest known density?
15 Most Dense Materials on Earth | Volumetric Mass Density
- Osmium
- Iridium Density : 22.56 g/cm 3 Iridium is hard, shiny and one of the densest transition metal in the platinum group. ...
- Platinum Wikimedia Commons Density: 21.45 g/cm 3 Platinum is an extremely rare Earth metal with an average abundance of 5 micrograms per kilogram. ...
Which element has the lowest density of all the elements?
Which element has the most density?
- As it turns out, either of two elements can be considered the element with the highest density: osmium or iridium.
- Both osmium and iridium are very dense metals, each weighing approximately twice as much as lead.
- At room temperature and pressure, the calculated density of osmium is 22.61 g/cm3 and the calculated density of iridium is 22.65 g/cm3.
Which element is the hardest?
What is the weakest of all metal?
- Steel. Steel is an alloy of iron and carbon, often in combination with other elements.
- Titanium. Titanium is a silvered colored metal with low density and high strength.
- Tungsten. Tungsten is a rare metal found on Earth in the form of chemical compounds.
- Inconel. Inconel is a type of austenite nickel-chromium superalloy.
Is element 119 possible?
Ununennium, also known as eka-francium or element 119, is the hypothetical chemical element with symbol Uue and atomic number 119. Ununennium and Uue are the temporary systematic IUPAC name and symbol respectively, which are used until the element is discovered, confirmed, and a permanent name is decided upon.
Is there an element 137?
Feynmanium is the provisional non-systematic name of an undiscovered element with the symbol Fy and atomic number 137. Feynmanium was named in honor of Richard Feynman (1918–1988), who worked in the path integral formulation of quantum mechanics, quantum electrodynamics, and particle physics.
Are elements above 118 possible?
As of 2022, the element with the highest atomic number known is oganesson (Z = 118), which completes the seventh period (row) in the periodic table. All elements in the eighth period and beyond thus remain purely hypothetical.
Is element 140 possible?
However, extended periodic table theories predicted about chemical elements beyond these 118 elements. According to this, Corbomite (Ct) is a chemical element with atomic number 140. However, in real-life science, element 140 has yet to be identified.
Is element 138 possible?
Untrioctium, Uto, is the temporary name for element 138. Isotopes are predicted in the bands 451Uto to 395Uto, 371Uto to 365Uto, and 359Uto. There may be isotopes in the band from the neutron dripline to 452Uto, but it is not possible to predict which ones are possible.
What is the 122th element?
Unbibium, also known as element 122 or eka-thorium, is the hypothetical chemical element in the periodic table with the placeholder symbol of Ubb and atomic number 122.
Is Element 120 possible?
Unbinilium, also known as eka-radium or simply element 120, is the hypothetical chemical element in the periodic table with symbol Ubn and atomic number 120.
Is element 121 possible?
Unbiunium, also known as eka-actinium or simply element 121, is the hypothetical chemical element with symbol Ubu and atomic number 121. Unbiunium and Ubu are the temporary systematic IUPAC name and symbol respectively, which are used until the element is discovered, confirmed, and a permanent name is decided upon.
What is the 126 element?
UnbihexiumUnbihexium, also known as element 126 or eka-plutonium, is the hypothetical chemical element with atomic number 126 and placeholder symbol Ubh. Unbihexium and Ubh are the temporary IUPAC name and symbol, respectively, until the element is discovered, confirmed, and a permanent name is decided upon.
Is the periodic table infinite?
While there's no conclusive answer, it seems we still have a lot left to discover. According to nuclear physicist Witold Nazarewicz, there are good reasons to think the periodic table can't be infinite. But that doesn't make predicting its limits any easier.
Where would element 119 go on the periodic table?
So where will we place element 119 in the periodic table of elements? Based on both the Seaborg and Pyykkö extended periodic tables described above, element 119 will be the start of period 8 and it will be an alkali metal.
Can elements be undiscovered?
Although there are elements we have not yet created or found in nature, scientists already know what they will be and can predict their properties. For example, element 125 has not been observed, but when it is, it will appear in a new row of the periodic table as a transition metal.
Which element has the highest atomic mass?
Oganesson has the highest atomic number and highest atomic mass of all known elements. Click to see full answer.
Which element is the most expensive?
If you could buy it, you'd pay billions of dollars for 100 grams. The most expensive natural element that is stable enough to purchase is lutetium . Atoms of synthetic elements cost millions of dollars to produce.
What is the atomic number of ununennium?
Ununennium, also known as eka-francium or element 119 , is the hypothetical chemical element with symbol Uue and atomic number 119 . In the periodic table of the elements, it is expected to be an s-block element, an alkali metal, and the first element in the eighth period.
Which element has the highest density?
As it turns out, either of two elements can be considered the element with the highest density: osmium or iridium . Both osmium and iridium are very dense metals, each weighing approximately twice as much as lead. At room temperature and pressure, the calculated density of osmium is 22.61 g/cm 3 and the calculated density of iridium is 22.65 g/cm 3.
What is the densest liquid on Earth?
The densest liquid on Earth is the liquid element mercury, which has a density of 13.5 grams per cubic centimeter. Cite this Article.
What is the density of osmium?
However, the experimentally measured value (using x-ray crystallography) for osmium is 22.59 g/cm 3, while that of iridium is only 22.56 g/cm 3. Normally, osmium is the densest element. However, the density of the element depends on many factors.
Why is iridium packed into a small volume?
The reason this happens is the f electron orbitals are contracted at the n=5 and n=6 orbitals because the electrons in them aren't well-shielded from the attractive force of the positive-charged nucleus.
Is there a density of hydrogen gas?
These include the allotrope (form) of the element, the pressure, and the temperature, so there isn't a single value for density. For example, hydrogen gas on earth has a very low density, yet that same element in the Sun has a density surpassing that of either osmium or iridium on Earth. If both osmium and iridium density are measured under ordinary conditions, osmium takes the prize. Yet, slightly different conditions could cause iridium to come out ahead.
Is iridium denser than osmium?
If both osmium and iridium density are measured under ordinary conditions, osmium takes the prize. Yet, slightly different conditions could cause iridium to come out ahead. At room temperature and a pressure above 2.98 GPa, iridium is denser than osmium, with a density of 22.75 grams per cubic centimeter.
Which element has the highest atomic number?
The highest atomic number nuclei produced in supernova explosions seems to be unknown at this time, but it's unlikely that uranium is at the peak. The reason that uranium has the highest atomic number of any somewhat common element on the Earth is that, while it has no stable isotopes, it has long-lived isotopes, and nearly half the U-238 that was present when Earth formed is still here.
Which element is found in the greatest number of compounds?
If someone has unlimited access to Chemical Abstracts, maybe they can verify that hydrogen is the element found in the greatest number of compounds. Carbon and oxygen are the only other elements that might be competitive here,
How big is the Uranium-238 nucleus?
However, many atomic nuclei are much larger than 2.5 fm in diameter; Uranium-238 nucleus is around 15 fm in size, and each proton or neutron only interacts with a few other which are the closest to it. To reduce the repulsive force between protons, it must have a lot more neutrons than protons (92 protons, 146 neutrons), increasing both the net value of nuclear binding force and the distances (and therefore reduces repulsive forces) between protons.
What is the most common type of decay in lighter elements?
a) Beta decay - most common type of decay in lighter elements. It is caused when a nucleus has unstable neutron-proton ratio (based on Pauli exclusion principle). It has two variations, β- changes a neutron into a proton, and β+ changes a proton into a neutron - emitting beta particles (leptons) in both case. The number of particles in the nucleus stays the same, only the quantity of protons protons changes. Very similar to beta decay is the process of electron capture, which absorbs one of the atom's own inner electrons and changes one of its protons into a neutron.
Why are heavier nuclei more unstable?
Reason why heavier nuclei are more unstable lies in electrostatic repulsion of protons, which is stronger than the nuclear force at longer distances. Nuclear force, which binds protons and neutrons to other protons or neutrons in the nucleus is significant only in very short distances, becoming unnoticeable at ~2.5 fm (femtometers).
What is the most common type of decay?
When it comes to superheavy elements, most common type of decay is definitely either alpha decay or spontaneous fission. There are two major forces which govern how resistant are nuclei going to be in against those types of decay, those are the strong force and electrostatic force, difference between them gives a binding energy. Binding energy of all nuclei heavier than lead 207 is less than 7.87 MeV per nucleon, making them all inherently unstable.
How many half lives are undetectable?
Any isotope that would have undergone decays through 50 or more half-lives would be undetectable now.
What is the most expensive element?
Fast Facts: The Most Expensive Natural Elements 1 The most expensive natural element is francium, but it decays so quickly it can't be collected to be sold. If you could buy it, you'd pay billions of dollars for 100 grams. 2 The most expensive natural element that is stable enough to purchase is lutetium. If you order 100 grams of lutetium, it will cost about $10,000. 3 Atoms of synthetic elements cost millions of dollars to produce. Sometimes they don't even last long enough to be detected. Scientists only know they were there because of their decay products.
How much is Plutonium worth?
Plutonium is a radioactive element that can be used for research and nuclear applications. It's worth about $4,000 per gram (although you can expect various regulatory agencies to take a close look at you if you start accumulating it).
How much does a 100 gram of lutetium cost?
dollars for it. Lutetium is the most expensive element that you could actually order and purchase. The price for 100 grams of lutetium is around $10,000.
How much does a transuranium element cost?
The transuranium elements, in general, are extremely expensive. These elements typically are man-made, plus it is costly to isolate the trace amounts of transuranic elements that exist naturally. For example, based on the cost of the accelerator time, manpower, materials, etc., californium is estimated to cost around $2.7 billion per 100 grams. You can contrast that price with that cost of plutonium, which runs between $5,000 and $13,000 per 100 grams, depending on purity.
How much does californium cost?
A gram of californium-252 can cost $27 million per gram, which makes it considerably more expensive than lutetium, but less than francium.
What is the cost of tritium?
Tritium is used in research and to illuminate phosphors as a light source. It costs around $30,000 per gram. Carbon can be one of the least expensive elements (as carbon black or soot) or most expensive (as diamond).
What is the value of rhodium?
Rhodium is used in jewelry and catalytic converters. It's worth around $45 per gram. Platinum has value comparable to that of rhodium. It's used as a catalyst, in jewelry, and in certain drugs. It costs around $48 per gram. Plutonium is a radioactive element that can be used for research and nuclear applications.
How many elements are there in the periodic table?
The number of physically possible elements is unknown. A low estimate is that the periodic table may end soon after the island of stability, which is expected to center on Z = 126, as the extension of the periodic and nuclides tables is restricted by the proton and the neutron drip lines and stability toward alpha decay and spontaneous fission. One calculation by Y. Gambhir et al., analyzing nuclear binding energy and stability in various decay channels, suggests a limit to the existence of bound nuclei at Z = 146. Some, such as Walter Greiner, predicted that there may not be an end to the periodic table. Other predictions of an end to the periodic table include Z = 128 ( John Emsley) and Z = 155 (Albert Khazan).
Which element has the orbitals 1s, 2p, 3s, 3p, 3d, 4s,?
At element 118 , the orbitals 1s, 2s, 2p, 3s, 3p, 3d, 4s, 4p, 4d, 4f, 5s, 5p, 5d, 5f, 6s, 6p, 6d, 7s and 7p are assumed to be filled, with the remaining orbitals unfilled. A simple extrapolation from the Aufbau principle would predict the eighth row to fill orbitals in the order 8s, 5g, 6f, 7d, 8p; but after element 120, the proximity of the electron shells makes placement in a simple table problematic.
What are the elements that are beyond actinides?
Heavier elements beyond the actinides were first proposed to exist as early as 1895, when the Danish chemist Hans Peter Jørgen Julius Thomsen predicted that thorium and uranium formed part of a 32-element period which would end at a chemically inactive element with atomic weight 292 (not far from the 294 known today for the first and only discovered isotope of oganesson ). In 1913, the Swedish physicist Johannes Rydberg similarly predicted that the next noble gas after radon would have atomic number 118, and purely formally derived even heavier congeners of radon at Z = 168, 218, 290, 362, and 460, exactly where the Aufbau principle would predict them to be. Niels Bohr predicted in 1922 the electronic structure of this next noble gas at Z = 118, and suggested that the reason why elements beyond uranium were not seen in nature was because they were too unstable. The German physicist and engineer Richard Swinne published a review paper in 1926 containing predictions on the transuranic elements (he may have coined the term) in which he anticipated modern predictions of an island of stability: he had hypothesised since 1914 that half-lives should not decrease strictly with atomic number, but suggested instead that there might be some longer-lived elements at Z = 98–102 and Z = 108–110, and speculated that such elements might exist in the Earth's core, in iron meteorites, or in the ice caps of Greenland where they had been locked up from their supposed cosmic origin. By 1955, these elements were called superheavy elements.
What is the seventh period in the periodic table?
An extended periodic table theorises about chemical elements beyond those currently known in the periodic table and proven, up to oganesson, which completes the seventh period (row ) in the periodic table at atomic number ( Z) 118. As of 2021. , no element with a higher atomic number than oganesson has been successfully synthesized;
Which element can easily form a +8 oxidation state?
In the first few superactinides, the binding energies of the added electrons are predicted to be small enough that they can lose all their valence electrons; for example, unbihexium ( element 126) could easily form a +8 oxidation state, and even higher oxidation states for the next few elements may be possible.
Why are 7D transition metals not noble?
The noble metals of this series of transition metals are not expected to be as noble as their lighter homologues, due to the absence of an outer s shell for shielding and also because the 7d shell is strongly split into two subshells due to relativistic effects. This causes the first ionization energies of the 7d transition metals to be smaller than those of their lighter congeners.
Which elements are displaced from the plane?
Elements 111 and 112 are displaced from the plane to reflect differing configurations from Au and Hg.
Which element is the heaviest stable?
No undiscovered elements are expected to be stable; therefore, lead is considered the heaviest stable element.
Which element has fewer stable isotopes?
Since a nucleus with an odd number of protons is relatively less stable, odd-numbered elements tend to have fewer stable isotopes. Of the 26 " monoisotopic " elements that have only a single stable isotope, all but one have an odd atomic number—the single exception being beryllium.
How many isotopes are stable?
For each of the 80 stable elements, the number of the stable isotopes is given. Only 90 isotopes are expected to be perfectly stable, and an additional 162 are energetically unstable, but have never been observed to decay. Thus, 252 isotopes ( nuclides) are stable by definition (including tantalum-180m, for which no decay has yet been observed). Those that may in the future be found to be radioactive are expected to have half-lives longer than 10 22 years (for example, xenon-134).
What is the longest half life of a nuclide?
One of the primordial nuclides is tantalum-180m, which is predicted to have a half-life in excess of 10 15 years, but has never been observed to decay. The even-longer half-life of 2.2 × 10 24 years of tellurium-128 was measured by a unique method of detecting its radiogenic daughter xenon-128 and is the longest known experimentally measured half-life. Another notable example is the only naturally occurring isotope of bismuth, bismuth-209, which has been predicted to be unstable with a very long half-life, but has been observed to decay. Because of their long half-lives, such isotopes are still found on Earth in various quantities, and together with the stable isotopes they are called primordial isotope. All the primordial isotopes are given in order of their decreasing abundance on Earth.. For a list of primordial nuclides in order of half-life, see List of nuclides .
How many stable isotopes does tin have?
Of the chemical elements, only one element ( tin) has 10 such stable isotopes, five have seven isotopes, eight have six isotopes, ten have five isotopes, nine have four isotopes, five have three stable isotopes, 16 have two stable isotopes, and 26 have a single stable isotope. Additionally, about 30 nuclides of the naturally occurring elements have ...
What isotope has a half life of 10 8 years?
b Isotopes that have a half-life of more than about 10 8 yr may still be found on Earth, but only those with half-lives above 7×10 8 yr (as of 235 U) are found in appreciable quantities. The present list neglects a few isotopes with half-lives about 10 8 yr because they have been measured in tiny quantities on Earth. Uranium-234 with its half-life of 246,000 yr and natural isotopic abundance 0.0055% is a special case: it is a decay product of uranium-238 rather than a primordial nuclide.
How long does a radioactive element have a half life?
Significantly radioactive elements: the most stable isotope has half-life between 800 and 34,000 years.
What is the highest atomisity of sulphur?
Well sulphur with elment symbol S is having atomisity of eight;highest atomisity known till now! Wait! Carbon in the piece of a diamond is having more atomisity but remember that diamond piece is not having pure form of carbon and even if it is still it has 4 chemical bonds that make it meaning same atomisity as sulphur. Scientist are still finding if any element has more or even a new element. However we still don't have the technology to see an actual atom but to see molecule. So we don't have any confirmation till now and can't say with confidence but we can't do anything about that so just
What is an element?
An element is any of a number of atoms whose nuclei have the same number of protons.
Why is there a limit to radioactivity?
Radioactivity does not play a major role in why there is a limit to it, believe it or not but special relativity is the reason why. Electrons orbit the nucleus due to the positive-negative attraction of the protons in the nucleus and the electrons in the energy levels (orbitals), this causes electrons to orbit the nucleus with speed, the more protons you add the greater the attraction and the faster the electrons go and since anything with mass cannot exceed the speed of light (299792458 m/s) the electrons (which obviously have mass) at one point would go so fast that they would go at the speed o
How to find the atomicity of an element?
There is a simple way to determine the atomicity of any element. It can be determined as a ratio of molecular mass and atomic mass. For example, using the case of oxygen molecule, the molecular mass is 32 (= 2x16), while the atomic mass is 16. If we divide the two, we get atomicity as 2 (=32/16).
What is the atomic number of Plutonium?
Plutonium (Pu) is the chemical element having atomic no 94 and molecular weight of 244.
What is an atom?
An atom is a single nucleus with its electrons.
What is everything made of?
Everything is made of atoms, and that includes every pure substance — both compounds and elements.
