Prashnikaप्रश्निका

Coordination complex analyser

Give a coordination complex by its formula or its name and get what ISC Chemistry asks about it: the IUPAC name, oxidation state, coordination number, hybridisation and shape, unpaired electrons and magnetic moment, inner or outer orbital, crystal field splitting and isomers - with the valence bond box diagram.

Try: [Co(NH3)6]Cl3K4[Fe(CN)6][Ni(CN)4]2-[NiCl4]2-[CoF6]3-potassium trioxalatochromate(III)

Answer

[NiCl4]2−

IUPAC name
tetrachloridonickelate(II)
Hybridisation
sp3
Shape
tetrahedral
Oxidation state of Ni
+2
Coordination number
4
Unpaired electrons
2
Magnetic
paramagnetic, μ = 2.83 BM
Crystal field stabilisation
-0.8 Δ
Isomerism
none

Valence bond picture

Free Ni2+ ion (d8)

↑↓↑↓↑↓↑↑3d4s4p

In the complex (sp3; ×× = a ligand’s electron pair)

↑↓↑↓↑↓↑↑3d××4s××××××4p

Practise on real ISC questions

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