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Which one of the following represents the correct order of stability of the ions

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By Expert Faculty of Sri Chaitanya
a
Tl+>Tl+3
b
Bi+5>Bi+3
c
Pb+4>Pb+2
d
Al+>Al+3

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detailed solution

Correct option is A

Due to inert pair effect, Tl+ ion is more stable than Tl+3 ion.


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The bond dissociation energy of BF bond in BF3 is 646 kJ mol–1 whereas that of CF in CF4 is 315 kJ mol–1. The correct reason for higher B-F bond dissociation energy as compared to that of C-F bond is :

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