How many of the following salts are yellow in colour? `Ag_(2)CrO_(4), PbO_(2), Bi_(2)S_(3), K_(4)[Fe(CN)_(6)], SnS_(2), CuO, Fe(

How many of the following salts are yellow in colour?
`Ag_(2)CrO_(4), PbO_(2), Bi_(2)S_(3), K_(4)[Fe(CN)_(6)], SnS_(2), CuO, Fe(OH)_(2)(CH_(3)COO)`
`K_(3)[Co(NO_(2))_(6)], NaCrO_(2)`

How many of the following salts are yellow in colour? `Ag_(2)CrO_(4), PbO_(2), Bi_(2)S_(3), K_(4)[Fe(CN)_(6)], SnS_(2), CuO, Fe(OH)_(2)(CH_(3)COO)` `K

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