Give reasons. a. Neon is an inert gas.
b. The valency of oxygen is two.

c. The elements of group IA are called alkali metals.
please help with these questions..

a. neon has complete valence shells hence it is inert

b. valency of oxygen is 2 because it has 6 electrons in valence shell

so it's valency is 2

c. elements of group 1 is known as alkali metals

because they are very reactive and forms strong alkali bases when dissolved in water

1.solid

2.carbon dioxide

3.helium