Question

explain why lithium on being heated in air mainly forms the oxide and not peroxide

Answer 1

Lithium ion Li⁺ is smaller in size. It is stabilized more by smaller anion, oxide ion(O²⁻) as compared to larger anion, peroxide ion (O₂²⁻)

This is the reason why Lithium on being heated mainly forms oxide rather than peroxide

Answer 2

Answer:

Explanation:

Lithium on being heated in air mainly forms the oxide and not peroxide because we Know Lithium has Atomic Number 3, this means that it has 1 electron in outermost shell and The Oxygen has Atomic no. 8 and it can gain two electrons therefore it's valency is 2.

When Reacting Both of them the Valencies of Both Elements will be Crossed and Changed to make up a chemical Reaction.

This is as Follows:-

Lithium--> 1

Oxygen ---> 2 (Valency).

Crossed to form

Li2O ( Lithium oxide) ....

Remember that Electrons of Oxygen has been written with Lithium Respectively...

Thus it can't be possible to form a Compound of Lithium Peroxide(LiO2) while Reaction of Lithium And Oxygen..

Therefore we have came to conclusion of this question..

I hope it Helped You...