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Coordination Compounds — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryCoordination Compounds1 Mark
MCQ
The correct labeling of different terms used in coordination compounds is:

  • A
    (i) Central atom, (ii) Ionisation sphere, (iii) Coordination number, (iv) Ligands
  • B
    (i) Ligands, (ii) Coordination number, (iii) Valency, (iv) Ionisation sphere
  • C
    (i) Ionisation sphere, (ii) Ligands, (iii) Coordination number, (iv) Central atom
  • D
    (i) Ligands, (ii) Ionisation sphere, (iii) Coordination number, (iv) Central atom
✓

Answer

  1. (i) Ligands, (ii) Ionisation sphere, (iii) Coordination number, (iv) Central atom

Explanation:

Ammonia is a ligand. It donates lone pair of electrons to Cobalt (central metal atom) and forms co-ordinate bond. Co-ordination number is 6 as 6 ammonia ligand coordinate to central metal.

(ii) represents ionisation sphere, [Co(NH3​)6​] has +3 charge.

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