The complex [CoF6]4- is

Question

The complex [CoF6]4- is (A) outer orbital and diamagnetic (B) inner orbital and paramagnetic (C) inner orbital and diamagnetic (D) outer orbital and paramagnetic

Tardigrade Admin · Accepted Answer

In [ CoF 6]4-, central metal Co is present as Co 2+. C o2+=[A r] 3 d7 4 s0 Because of the presence of three unpaired electrons, the complex is paramagnetic. Moreover, F- ions occupy outer d-orbitals (ie, nd-orbitals), thus it is an outer orbital complex.

Q. The complex $[C o F_{6}]^{4 -}$ is

outer orbital and diamagnetic

inner orbital and paramagnetic

inner orbital and diamagnetic

outer orbital and paramagnetic

In $[C o F_{6}]^{4 -}$ , central metal
Co is present as $C o^{2 +}$ .
$C o^{2 +} = [A r] 3 d^{7} 4 s^{0}$
Because of the presence of three unpaired electrons, the complex is paramagnetic. Moreover, $F^{-}$
ions occupy outer $d$ -orbitals (ie, $n d$ -orbitals), thus it is an outer orbital complex.

Q. The complex [CoF6​]4− is