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Coordination Compounds

Short Answer Type

21.

Write the chemical formula of:
(i) Sodium tetrahydridoborate(III).
(ii) Tetrahydroxo zincate(II) ion.

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22. What are the basic difference between the two geometrical isomers – cis/trans or fac/ mor?

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23.

Specify which out of the following complex structures exhibit geometrical isomerism:
(a) Linear, (b) Square planar, (c) Tetrahedral, (d) Octahedral.

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24.

Give two examples of positive mono-denate ligands.

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25. Give an example of neutral bidentate ligand.

Ethylene diamine H₂N-CH₂-CH₂-NH₂ (represented as en). There are two coordination sites in it shown by lone pair of electrons at two nitrogen atoms.

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26.

Give an example of hexadentate ligand.

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27.

Why is geometrical isomerism not possible in tetrahedral complexes having two different types of unidentate ligands coordinated with the central metal ion ?

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28.

Write all isomers of [Co(C₂O₄)₃]^3–.

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29.

Draw structures of geometrical isomers of [Fe(NH₃)₂(CN)₄]^–.

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30.

Which isomer of [CoCl₂(en)₂]⁺ does not show optical isomerism?

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