MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic Chemistryp-Block (group 13 and 14)Previous Year Questions
Carbon and silicon belong to (IV) group. The maximum coordination number of carbon in commonly occurring compounds is 4, whereas that of silicon is 6. This is due to (AIPMT 1994)
A.availability of low lying d-orbitals in silicon✓ Correct
B.large size of silicon
C.more electropositive nature of silicon
D.both (b) and (c).
Explanation
Carbon has no d-orbitals, while silicon contains d-orbitals in its valence shell which can be used for bonding purposes.
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