Question

i) When alkali metals are heated in excess of air, what is the nature of Oxides formed?
ii) Which is having more reducing characteristics out of alkali metals and alkaline earth metals?
iii) What happens when sodium metal is heated in free supply of air?​

Answer 1

Answer:

When Alkali metals are heated in excess air basic nature of oxides are formed.

The reducing nature is determined by the tendency of losing electron. Since this tendency is lower in alkaline earth metal than alkali metal, the former are weaker reducing agent.

When sodium metal is heated in a free supply of air, sodium peroxide (Na2O2) along with small amount of sodium oxide is formed. When sodium peroxide is dissolved in water, hydrogen peroxide is produced