Question

The pair of compounds having metals in their highest oxidation state is : (1) mno2 and cro2cl2 (2) [nicl4 ] 2 and [cocl4 ] 2 (3) [fe(cn)6 ] 3 and [cu(cn)4 ] 2 (4) [fecl4 ] and co2o3

Answer 1

Hey dear,

● Answer = (1) MnO2 & CrO2Cl2

● Explanation-
(1) MnO2 Oxidation State = +4
CrO2Cl2 Oxidation State = +6

(2) [NiCl4]2- Oxidation State = +2
[CoCl4]2- Oxidation State = +2

(3) [Fe(CN)6]3- Oxidation State = +3
[Cu(CN)4]2- Oxidation State = +2

(4) [FeCl4]- Oxidation State = +3
Co2O3 Oxidation State = +3

Observing all figures we can say that first pair have highest oxidation states.

Hope this is helpful...