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Question

Which of the following do not have any tendency to act as ligands during complex formation ?

A
BiH3
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B
PH3
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C
AsH3
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D
SbH3
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Solution

The correct options are
B SbH3
D BiH3
BiH3 and SbH3 do not have any tendency to act as ligands during complex formation.
Among the hydrides of group 15, the basic nature decreases in the order NH3>PH3>AsH3>SbH3>BiH3
Hence, the tendency to donate lone pair of electrons and the tendency to act as ligand also decreases in the same order.

correct options is A and D.

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