The oxidation state (n) and coordination number (C .N.) of Al and number of valence electrons around Al(N) in `Al_2Cl_6` are respectively

Options

A. `3, 3, 6`
B. `3, 4, 8`
C. `4, 4, 8`
D. `3, 4, 6`

Answer

B

Explanation

Structure of `Al_(2)Cl_(6)` is

Therefore,
(i) Oxidation state (x) of A,' in `Al_(2)Cl_(6)`:
`=2x-6=0` or `x=(+)3`
(ii) Coordination number of Al in `Al_(2)Cl_(6)` is four (4), it is bonded to 4 chlorine atoms in `Al_(2)Cl_(6)`
(iii) Number of valence electrons around Al in
`Al_(2)Cl_(6)=2xx4=8`
Hence, option (b) is the correct answer.