Assertion(A): The maximum covalency of Si and Ge is 6 but that of carbon is 4. Reason (R): Due to the presence of d-orbitals in Si and Ge, both these elements can undergo sp 3 d 2 hybridisation and covalency of 6 is possible. Carbon has no d-orbitals in it and hence its covalency is 4. The correct answer is:

Question

Assertion(A): The maximum covalency of Si and Ge is 6 but that of carbon is 4. Reason (R): Due to the presence of d-orbitals in Si and Ge, both these elements can undergo sp 3 d 2 hybridisation and covalency of 6 is possible. Carbon has no d-orbitals in it and hence its covalency is 4. The correct answer is:, (A) and (R) are correct and (R) is the correct explanation of ( A ), (A) and (R) are correct but ( R ) is not the correct explanation of ( A ), (A) is correct but ( R ) is not correct, (A) is not correct but (R) is correct

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