Assertion (A): K , Rb and Cs form superoxides Reason (R): The stability of superoxides increases form K to Cs due to decrease in lattice energy.

Question

Assertion (A): K , Rb and Cs form superoxides Reason (R): The stability of superoxides increases form K to Cs due to decrease in lattice energy., Both A and R are true and R is a correct explanation for A, Both A and R are true but R is not a correct explanation for A, A is true, R is false, A is false, R is true

MARKS App · Accepted Answer

K , Rb , Cs form superoxides when they are burnt in the air. As we down the group then the size of atom from K to Cs increases so that the lattice energy decreases hence the stability of superoxide also decreases.

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