CBSE Class 12 Chemistry 2019 Outside Delhi Set 2 Solved Paper

Question : 10 of 27

Marks: +1, -0

Define the following terms with a suitable example of each:
(a) Chelate complex
(b) Ambidentate ligand
OR
Using IUPAC norms, write the formula for the following complexes:
(a) Tetraamminediaquacobalt(III) chloride
(b) Dibromidobis(ethane-1,2-diamine) platinum(IV) nitrate

Solution:

(a) A complex formed by bi or polydentate ligands with metal Example -

[ {\Co}( {\en})_3] ^{3+}

(b) A ligand which can ligate through two different donor atoms. Example:

{\SCN}^{-}

OR
(i)

[ {\Co} ( {\NH}_3) _4 ( {\H}_2 {\O}) _2] {\Cl}_3

(ii)

[ {\Pt} {\Br}{ }_2( {\en})_2] ( {\NO}_3) _2

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