What is the atomic mass of each element in the table?
Atomic Mass of all Elements (Chart + Rounded values) Atomic Number Element Atomic Mass (u) Atomic mass (u) (Rounded off) 13 Atomic mass of Aluminum (Al) 26.982 27 14 Atomic mass of Silicon (Si) 28.085 28 15 Atomic mass of Phosphorus (P) 30.974 31 16 Atomic mass of Sulfur (S) 32.06 32 44 more rows ...
What is the atomic mass of a synthetic element?
The Atomic masses are represented in the Atomic mass unit (u). The elements whose atomic masses are written in bracket ( ) are the synthetic elements and their atomic masses values represent the Atomic Mass of the most stable isotope.
What is the atomic mass of a yttrium?
Summary Element Yttrium Atomic number 39 Atomic mass [amu] 88.90585 Atomic mass [pm] 190 Density at STP [g/cm3] 4.472 8 more rows ...
What is the unity for the atomic mass of elements?
The unity for atomic mass is gram per mol. Please note that the elements do not show their natural relation towards each other as in the Periodic system. There you can find the metals, semi-conductor (s), non-metal (s), inert noble gas (ses), Halogens, Lanthanoides, Actinoids (rare earth elements) and transition metals.
What element has an atomic mass of 89?
ActiniumThe elements of the periodic table sorted by atomic massAtomic MassName chemical elementnumber223Francium87226Radium88227Actinium89231.0359Protactinium91111 more rows
What has an atomic mass of 89 and 39 electrons?
Yttrium Atomic and Orbital PropertiesAtomic Number39Mass Number89Number of Neutrons50Shell structure (Electrons per energy level)[2, 8, 18, 9, 2]Electron Configuration[Kr] 4d1 5s25 more rows
What is the atomic symbol of 89?
symbol AcActinium is a chemical element with symbol Ac and atomic number 89. Classified as an actinide, Actinium is a solid at room temperature.
What has an atomic mass of 90?
ThoriumThorium - Element information, properties and uses | Periodic Table.
What element has the atomic number 39?
YttriumYttrium - Element information, properties and uses | Periodic Table.
What element has a mass number of 90 and 39 electrons?
Yttrium is a chemical element with atomic number 39 which means there are 39 protons and 39 electrons in the atomic structure. The chemical symbol for Yttrium is Y. Since the number of electrons is responsible for the chemical behavior of atoms, the atomic number identifies the various chemical elements.
How many electrons are in the atomic number 89?
89 electronsAtomic Number of Actinium Actinium is a chemical element with atomic number 89 which means there are 89 protons and 89 electrons in the atomic structure.
What are elements 89 to 103 called?
actinoid element, also called actinide element, any of a series of 15 consecutive chemical elements in the periodic table from actinium to lawrencium (atomic numbers 89–103). As a group, they are significant largely because of their radioactivity.
What is the name of elements 89 103?
The actinide (/ˈæktɪnaɪd/) or actinoid (/ˈæktɪnɔɪd/) series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium. The actinide series derives its name from the first element in the series, actinium.
What is the atomic mass of all elements?
The Elements, sorted by Atomic MassAtomic NumberSymbolAtomic Weight (amu, g/mol)9F18.99840310Ne20.17911Na22.9897712Mg24.30571 more rows
What element has the atomic number of 88?
RadiumRadium - Element information, properties and uses | Periodic Table.
What element has an atomic mass of 80?
MercuryMercury - Element information, properties and uses | Periodic Table.
How many electrons does yttrium have?
2,8,18,9,2Yttrium / Electrons per shell
What is the atomic number of yttrium?
39Yttrium / Atomic number
How many electrons surround the nucleus of an atom of yttrium?
The nucleus consists of 39 protons (red) and 50 neutrons (blue). 39 electrons (green) bind to the nucleus, successively occupying available electron shells (rings). The stability of an element's outer electrons determines its chemical and physical properties.
How many protons neutrons and electrons does astatine have?
Therefore, the number of electrons in neutral atom of Astatine is 85....Summary.ElementAstatineNumber of protons85Number of neutrons (typical isotopes)210Number of electrons85Electron configuration[Hg] 6p51 more row
What is the atomic mass of an atom?
The atomic mass is the mass of an atom. The atomic mass or relative isotopic mass refers to the mass of a single particle, and therefore is tied to a certain specific isotope of an element. The atomic mass is carried by the atomic nucleus, which occupies only about 10 -12 of the total volume of the atom or less, but it contains all the positive charge and at least 99.95% of the total mass of the atom. Note that, each element may contain more isotopes, therefore this resulting atomic mass is calculated from naturally-occuring isotopes and their abundance.
How is atomic weight determined?
Therefore it is determined by the mass number (number of protons and neutrons).
How many electrons does neon have?
Neon is a chemical element with atomic number 10 which means there are 10 protons and 10 electrons in the atomic structure. The chemical symbol for Neon is Ne.
How many protons does nitrogen have?
Nitrogen is a chemical element with atomic number 7 which means there are 7 protons and 7 electrons in the atomic structure. The chemical symbol for Nitrogen is N.
How many protons does helium have?
Helium is a chemical element with atomic number 2 which means there are 2 protons and 2 electrons in the atomic structure. The chemical symbol for Helium is He.
What is the lightest element on the periodic table?
With a standard atomic weight of circa 1.008, hydrogen is the lightest element on the periodic table. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass.
What is the most abundant element in the Earth's crust?
Aluminium is a silvery-white, soft, nonmagnetic, ductile metal in the boron group. By mass, aluminium makes up about 8% of the Earth’s crust; it is the third most abundant element after oxygen and silicon and the most abundant metal in the crust, though it is less common in the mantle below.
What is the atomic mass of Yttrium?
Atomic mass of Yttrium is 88.90585 u. The atomic mass is the mass of an atom. The atomic mass or relative isotopic mass refers to the mass of a single particle, and therefore is tied to a certain specific isotope of an element. The atomic mass is carried by the atomic nucleus, which occupies only about 10 -12 of the total volume ...
Which part of the atom contains the most of the atomic mass?
The atomic mass is carried by the atomic nucleus, which occupies only about 10 -12 of the total volume of the atom or less, but it contains all the positive charge and at least 99.95% of the total mass of the atom.
How many electrons are in a neutral atom of Yttrium?
Therefore, the number of electrons in neutral atom of Yttrium is 39. Each electron is influenced by the electric fields produced by the positive nuclear charge and the other (Z – 1) negative electrons in the atom.
How many protons does yttrium have?
Yttrium is a chemical element with atomic number 39 which means there are 39 protons in its nucleus. Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z. The total electrical charge of the nucleus is therefore +Ze, where e (elementary charge) equals to 1,602 x 10-19 coulombs.
What is the electron affinity of an atom?
In chemistry and atomic physics, the electron affinity of an atom or molecule is defined as: the change in energy (in kJ/mole) of a neutral atom or molecule (in the gaseous phase) when an electron is added to the atom to form a negative ion. X + e– → X– + energy Affinity = – ∆H.
What is the electronegativity of Yttrium?
Electronegativity of Yttrium is 1.22. Electronegativity, symbol χ, is a chemical property that describes the tendency of an atom to attract electrons towards this atom. For this purposes, a dimensionless quantity the Pauling scale, symbol χ, is the most commonly used. The electronegativity of Yttrium is: χ = 1.22.
What is the difference between neutrons and atomic numbers?
The difference between the neutron number and the atomic number is known as the neutron excess: D = N – Z = A – 2Z. For stable elements, there is usually a variety of stable isotopes. Isotopes are nuclides that have the same atomic number and are therefore the same element, but differ in the number of neutrons.
