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D and F Block Elements question

2014 · Shift 1 · Q19
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D and F Block Elements question

2014 · Shift 1 · Q19

JEE AdvancedChemistryD and F Block ElementsNumerical+3 / −1
Among PbSPbSPbS, CuSCuSCuS, HgSHgSHgS, MnSMnSMnS, Ag2SAg_2SAg2​S, NiSNiSNiS, CoSCoSCoS, Bi2S3Bi_2S_3Bi2​S3​ and SnS2SnS_2SnS2​ the total number of black coloured sulphides is
Numerical answer
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