Question

For the $[Cr(H_{2}O )_{6}]^{2+}$ and $[Cr(CN)_{6}]^{4-}$ the $\Delta_{0}$ values are $17830cm^{-1}$ and $26280cm^{-1}$ respectively. The pairing energy is $23520cm^{-1}$ Calculate the number of unpaired electrons and magnetic moment.

Answer 1

Which one of the following ionic species has the greatest proton affinity to form stable compound?
(a) $NH_2^-$
(b) F⁻
(c) I⁻
(d) HS⁻