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Carbon shows a maximum covalency of four...

Carbon shows a maximum covalency of four whereas other members can expand their cavalence due to

A

absence of d-orbitals in carbon

B

ability of carbon to form `p pi - p pi` multiple bonds

C

small size of carbon

D

catenation of carbon.

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The correct Answer is:
A
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NCERT FINGERTIPS ENGLISH-THE P-BLOCK ELEMENTS-Assertion And Reason
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