JEE Main2014ChemistryCoordination CompoundsActual
Amongst the following, identify the species with an atom in + 6 oxidation state.
Options
- ACrO 2 Cl 2
- BCr CN 6 3 -
- CCr 2 O 3
- DMnO 4 -
Correct answer
A. CrO 2 Cl 2
Step-by-step solution
Cr + 6 O - 2 2 Cl - 1 2 ⇒ x + 2 ( − 2 ) + 2 ( − 1 ) = 0 x = 6 Cr + 3 CN 6 - 3 ⇒ x + 6 ( − 1 ) = − 3 x = 3 Cr + 3 2 O - 2 3 ⇒ 2 x + 3 ( − 2 ) = 0 x = 3 Mn + 7 O 4 - 2 - 1 ⇒ x + 4 ( − 2 ) = − 1 x = + 7