1.

(A): The lattice energy of superoxide of alkali metals increases with an increase in the size of the metal ion (R) : Lattice energy is directly proportional to size of the metal ion

Answer»

Both A and R are true, and R is CORRECT EXPLANATION of A
Both A and R are true, and R is not the correct explanation of A 
A is true but R is FALSE 
A is false but R is true 

Answer :C


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