Question

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Stability of most complexes with the alkaline earth metals is in the order Mg2+ > Ca2+ > Sr2+> Ba2+
Reason R :For type A ions, Electrostatic model approximately explain the stability of metal-ligand complexes that is, stability of these complexes is positively correlated with the ratio of Z2/r for both metal ion and the ligand species.
In the light of the above statements, choose the most appropriate answer from the options given below:

• A. Both A and R are correct and R is the correct explanation of A
• B. Both A and R are correct but R is not the correct explanation of A
• C. A is correct but R is not correct
• D. A is not correct but R is correct

Answer 1

Answer: (A)

Both A and R are correct and R is the correct explanation of A

Answer 2

The correct answer is (A) : Both A and R are correct and R is the correct explanation of A.