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Which one of the following is a false statement about 13th group elements is

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By Expert Faculty of Sri Chaitanya
a
Melting point of the Gallium is low
b
Thallium shows inert pair effect
c
Boron can easily form trivalent cations
d
Indium has the least IP1 value in 13th group

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detailed solution

Correct option is C

Melting point of the Gallium is low(302K).Thallium shows inert pair effect, it is more stable in +1 state than in +3 state.Boron cannot form trivalent cations due to very high sum of IP1, IP2 and IP3 values.IP1 trend - B > Tl > Ga > Al > In.


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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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