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Given below are two statement : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : 5f electron can participate in bonding to a far greater extent than 4f electrons. Reason R : 5f orbitals are not as buried as 4f orbitals. In the light of the above statements, choose the correct answer from the options given below

1. A is false but R is true
2. Both A and R are true and R is the correct explanation of A
3. A is true but R is false
4. Both A and R are true but R is NOT the correct explanation of A

Correct answer: Both A and R are true and R is the correct explanation of A

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