# Name the oxometal anions of the first series of the transition metals in which

Question:

Name the oxometal anions of the first series of the transition metals in which the metal exhibits the oxidation state equal to its group number.

Solution:

(i) Vanadate, $\mathrm{VO}_{3}^{-}$

Oxidation state of V is + 5.

(ii) Chromate, $\mathrm{CrO}_{4}^{2-}$

Oxidation state of Cr is + 6.

(iii) Permanganate, $\mathrm{MnO}_{4}^{-}$

Oxidation state of Mn is + 7.