What is the most reactive element and why? Alkali The alkali metals are a group (column) in the periodic table consisting of the chemical elements lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium (Fr). This group lies in the s-block of the periodic table of elements as all alkali metals have their outermost electron …Alkali metal
Caesium
Caesium is a chemical element with the symbol Cs and atomic number 55. It is a soft, silvery-golden alkali metal with a melting point of 28.5 °C, which makes it one of only five elemental metals that are liquid at or near room temperature. Caesium has physical and chemical properties similar to thos…
Which two of these elements are the least reactive?
The least reactive elements are the noble gases. Similarly, which two elements are the most reactive? Cesium and francium are the most reactive elements in this group. Alkali metals can explode if they are exposed to water. Likewise, which elements are most reactive and why? Caesium and fluorine.
What element would be more reactive with other elements?
Potassium is the most reactive metal, while platinum is the least reactive. The higher the metal in the series, the more reactive it is and the more vigorously it reacts with water, oxygen and acid. So zinc is more reactive than iron and copper. 04/04/2021 Manon Wilcox Education.
What group of elements are very reactive metals?
alkali metals The two most reactive groups of elements are the alkali metals and the halogens, because of their valence electrons.
Which elments are least likely to react with other elements?
their outer shell is already full of electrons which makes then less reactive. Noble gases are the least reactive of all elements. That's because they have eight valence electrons, which fill their outer energy level. This is the most stable arrangement of electrons, so noble gases rarely react with other elements and form compounds.
Which elements have the most reactivity?
The elements toward the bottom left corner of the periodic table are the metals that are the most active in the sense of being the most reactive. Lithium, sodium, and potassium all react with water, for example.
Which group of elements are the most reactive?
The two most reactive groups of elements are the alkali metals and the halogens, because of their valence electrons.
Why is group 1 the most reactive?
Valence electrons determine many of the properties of an element, so elements in the same group have similar properties. All the elements in group 1 have just one valence electron. This makes them very reactive.
Which one is more reactive?
In a reactivity series, the most reactive element is placed at the top and the least reactive element at the bottom. More reactive metals have a greater tendency to lose electrons and form positive ions ....The reactivity series.ElementReaction with waterCalciumMore slowly3 more rows
Which element is most reactive in Group 7?
FluorineFluorine is the most reactive element of all in Group 7.
Which element is most reactive in Group 2?
StrontiumStrontium is a group 2 element that does not occur as a free element due to its extreme reactivity with oxygen and water.
What group of elements are the most reactive nonmetals?
The most reactive nonmetal is fluorine. Fluorine is a halogen, which is Group 17 on the periodic table, and the halogens are the most reactive nonmetals. This is because they all have one empty space in their valence electron shells.
Why is Group 18 not reactive?
The noble gases (Group 18) are located in the far right of the periodic table and were previously referred to as the "inert gases" due to the fact that their filled valence shells (octets) make them extremely nonreactive.