Chemistry - Complete d-block Question with Solution | TestHub

(A) In the 3d series, up to iron, observed value = calculated value.

Beyond Fe, the observed value is greater than the calculated value.

B) On moving down the group, the stability of the +6 state increases.

C) $2{\mathrm{Fe}}^{3+}+2{\mathrm{I}}^{-}\to 2{\mathrm{Fe}}^{2+}+{\mathrm{I}}_2$

$2F{e}^{2+}+S_2{O}_8^{2{-}_{}}\to 2F{e}_{}^{3+}+2S{O}_4^{2-}$.

D) Actinides are more basic metals; hence, they do not react with alkalis.