Question

The stability order of oxide, peroxide and superoxide of alkali metal is

Answer 1

The stability order of oxide,peroxide and superoxide of alkali metals will be in order of increasing size of the metal ions.

This is because of stabilisation of larger anion by larger cation through lattice energy.

As the size of metal ion will increases down the group.Most stable oxide,peroxide and superoxide will be found down the group.

Answer 2

The stability order of oxide, peroxide and superoxide of alkali metal is

oxide > peroxide > superoxide.

Explanation:

• Due to higher lattice energies, the higher cations are stabilized by higher anions.
• The size of anion in ascending order is oxide < peroxide < superoxide.
• Hence lithium is more stable oxide and sodium is the more stable peroxide and superoxide.
• The lithium ions charge density is high which attracts the negative charge so the oxide ion is not allowed to take another oxygen atom for the formation of peroxide.
• Sodium is weaker positively as peroxide. K, Rb, Cs is the weaker positive around cations.
• More than two oxygen tom of oxide ion can be formed from superoxide ion.

To learn more;

1. https://brainly.in/question/15446419
2. https://brainly.in/question/3298704