MetallurgyHard

Question

Which of the following compounds is not colored yellow?

Options

A.(NH4)3[As(Mo3O10)4]
B.BaCrO4
C.Zn2[Fe(CN)6]
D.K3[Co(NO2)6]

Solution

(NH4)3[As(Mo3O10)4]              :     Yellow
BaCrO4                                    :     Yellow
Zn2[Fe(CN)6]                           :     White
K3[Co(NO2)6]                          :     Yellow

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