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Question

Pick out the incorrect statement:

A
The tendency to form ionic compounds increases from B to Tl
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B
Boron forms covalent compounds only
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C
Thallium forms ionic compounds only
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D
Group 13 elements have a lower tendency to form complexes than the s- block elements.
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Solution

The correct option is D Group 13 elements have a lower tendency to form complexes than the s- block elements.
Group-13 elements have more tendency to form complexes than s-block elements due to their smaller size, more effective nuclear charge as well as the presence of vacant orbitals to accept electrons.

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