CBSE Class 11-science Answered
Carbon can`t form octahedral coordination due to maximum covalency 4.Si Can expand it`s octet and covalency is +6, thus octahedhal coordination is possible
Asked by Sudhanshu Bansal | 02 Feb, 2014, 03:18: PM
Expert Answer
Due to the absence of vacant d orbitals in the valence shell of carbon, it is unable to expand its co-ordination number more than four. On the other hand silicon atom possesses vacant 3d orbitals in its valence shell and can utilise them. Thus silicon can expand its octet i.e. can increase its co-ordination number beyond four. Thus octahedral co-ordination is possible.
Answered by | 03 Apr, 2014, 11:32: AM
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