1.

Write the correct formulae for the following coordination compounds : (i) CrCl_(3).6 H_(2)O (violet with 3 chloride ions precipitated as AgCl) (ii) CrCl_(3).6H_(2)O (light green colour with 2 chloride ions precipitated as AgCl) (iii) CrCl_(3).6H_(2)O (dark green colour with 1 chloride ion precipitated as AgCl).

Answer»

SOLUTION :Remembering that coordination of Cr is 6, we have
(i) `[Cr(H_(2)O)_(6)]Cl_(3)`
(ii) `[Cr(H_(2)O)_(5)Cl]Cl_(2).H_(2)O`
(III) `[Cr(H_(2)O)_(4)Cl_(2)]Cl.(2 H_(2)O)`.


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