Free NCERT Solutions For Class 12 Chemistry Chapter 9 : Cordination Compounds Free PDF Download

Intext Exercise

Question 1:
Write the formulas for the following coordination compounds:
(i) Tetraamminediaquacobalt (III) chloride
(ii) Potassium tetracyanonickelate(II)
(iii) Tris(ethane-1,2-diamine) chromium(III) chloride
(iv) Amminebromidochloridonitrito-N-platinate(II)
(v) Dichloridobis(ethane-1,2-diamine)platinum(IV) nitrate
(vi) Iron(III) hexacyanoferrate(II)

Question 2:
Write the IUPAC names of the following coordination compounds:

Question 3:
Indicate the types of isomerism exhibited by the following complexes and draw the structures for these isomers:

Question 10:
The hexaquomanganese (II) ion contains five unpaired electrons, while the hexacyanoion
contains only one unpaired electron. Explain using Crystal Field Theory.

NCERT Exercise

Question 1:
Explain the bonding in coordination compounds in terms of Werner’s postulates.

Question 3:
Explain with two examples each of the following: coordination entity, ligand, coordination
number, coordination polyhedron, homoleptic and heteroleptic.

Question 4:
What is meant by unidentate, didentate and ambidentate ligands? Give two examples for each.

Question 5:
Specify the oxidation numbers of the metals in the following coordination entities:

Question 6:
Using IUPAC norms write the formulas for the following:
(i) Tetrahydroxozincate(II)
(ii) Potassium tetrachloridopalladate(II)
(iii) Diamminedichloridoplatinum(II)
(iv) Potassium tetracyanonickelate(II)
(v) pentaamminenitrito-O-cobalt(III)
(vi)Hexaamminecobalt(III)sulphate
(vii)Potassium tri(oxalato)chromate(III)
(viii) Hexaammineplatinum(IV)
(ix) Tetrabromidocuprate(II)
(x) Pentaamminenitrito-N-cobalt(III)

Solution 6:

Question 7:
Using IUPAC norms write the systematic names of the following:

Question 8:
List various types of isomerism possible for coordination compounds, giving an example of each.

Solution 8:

Question 11:
Draw all the isomers (geometrical and optical) of:

Question 13:
Aqueous copper sulphate solution (blue in colour) gives:
(i) a green precipitate with aqueous potassium fluoride, and
(ii) a bright green solution with aqueous potassium chloride
Explain these experimental results.

Question 14:
What is the coordination entity formed when excess of aqueous KCN is added to an aqueoussolution of copper sulphate? Why is it that no precipitate of copper sulphide is obtained when H2S(g) is passed through this solution?