Helium is an unreactive gas and neon has very poor reactivity. What do these elements have in common?

(a) Lithium, sodium, potassium are all metals that react with water to liberate hydrogen gas. Is there any similarity in the atoms of these elements? (b) Helium is an unreactive gas and neon is a gas of extremely low reactivity. What, if anything, do their atoms have in common?

Name the property which all the elements of group 13 have in common.

Why is nitrogen gas very unreactive ?

Has electronegativity of an element have specific units ?

What structural and functional characteristics do cilia, flagella and centrioles have in common?

What is the common name given to the elements of group 2 ?

Two elements X and Y contain only one electron in the outer level.Element X is reactive and loses electron easily while element Y is relatively unreactive and non-corrosive.The elements X and Y respectively are

What is the common name of the elements of group 1?

Fishes have very poor sense organs for

An element A is soft and can be cut with a knife. This is very reactive to air and cannot be kept open in air. It reacts vigorously with water. Identify the element from the following.