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Q.

Assertion  (A) : Boron has unusually high melting point.
Reason  (R) : Boron has very strong crystalline lattice.

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a

Both A and R are correct; R is the correct explanation of A.

b

Both A and R are correct; R is not the correct explanation of A.

c

A is correct; R is incorrect

d

A is incorrect; R is correct

answer is A.

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Detailed Solution

Because of strong crystalline lattice of boron, it has high melting point.

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