Variable Oxidation States

Question 1

Vanadium oxidation states and colours

Vasco’s gonna beat you

Answer 1

V2+ violet
V3+ blue
V4+ = VO2+ blue
V5+ = VO2 + yellow

Question 2

Chromium oxidation states and colours

go

Answer 2

C6+ = Cr2O7 2- orange

Cr3+ green unless it has water ligands then it is violet

Question 3

Manganese oxidation states and colours

P.P.P

Answer 3

Mn7+ = MnO4 - purple

Mn2+ pale pink

Question 4

Iron oxidation states and colours

gonna pay you

Answer 4

Fe3+ yellow unless water ligands purple

Question 5

cobalt oxidation states and colour

Answer 5

Co2+ Pink

Question 6

Nickel oxidation states and colour

Answer 6

Ni2+ green

Question 7

copper oxidation states and colour

Answer 7

Cu2+ blue