Assertion . K , Rb and Cs form superoxides . Reason . The stability of the superoxides increases from K to Cs due to decrease in lattice energy .

Assertion . K , Rb and Cs form superoxides . Reason . The stability o

1.	Assertion . K , Rb and Cs form superoxides . Reason . The stability of the superoxides increases from K to Cs due to decrease in lattice energy .
Answer» If both assertion and REASON are true, and reason is the true EXPLANATION of the assertion. If both assertion and reason are true, but reason is not the true explanation of the assertion. If assertion is true, but reason is false If both assertion and reason are false. Solution :Correct reason. Since for SALTS of larger anions , the lattice energy increases with increase in the size of the cation from `K^(+)` to `Cs^(+)` , THEREFORE , the stability of their superoxides increases from K to Cs.