Write formulas for the following compounds: 8. mercury (II) cyanide (a) Hg(CN)2 (b) HgCN (c) H&2CN (d) Hg2(CN)2 9. zinc hydroxide (a) ZNOH (b) ZN2OH (c) Zn(OH)2 (d) ZnOH2 10. aluminum dichromate (a) AICr20, (b) AI(Cr2O7)2 (c) Al2(Cr207) (d) Al2(Cr2O7)3 11. Copper (I) sulfide (a) Cus (b) CuS2 (c) Cu2S (d) Cu2S2 12. phosphorus heptabromide dichloride (a) P2B17C12 (b) PBr.Cl2 (c) PB17CI2 (d) PBr,CI

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