Among the following species , the one that does not exist is

Options

A. `[SiCl_6]^(2-)`
B. `[C Cl_6]^(2-)`
C. `[GeCl_6]^(2-)`
D. `[SnCl_6]^(2-)`

Answer

B

Explanation

The elements C,Si,Ge and Sn all belong to group IV A . The coordination of C is limited to 4 as it has no vacant d orbitals available in the valence shell and so, it cannot form `([C Cl_6]^(2-))`. Other elements have the maximum coordination number of 6.