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Question

Assertion :Boron always forms covalent bond. Reason: The small size of B3+ favours formation of covalent bond.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
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C
Assertion is correct but Reason is incorrect.
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D
Both Assertion and Reason are incorrect.
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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
According to Fajans rule small cations having high charge density always have tendency to form covalent bond.
So, both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
Hence, option A is correct.

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