Question

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R)
Assertion (A) : Boron is unable to form BF63-
Reason (R) : Size of B is very small
In the light of the above statements, choose the correct answer from the options given below:

• A. Both (A) and (R) are true and (R)is the correct explanation of(A)
• B. Both (A) and (R) are true but (R) is not the correct explanation of (A)
• C. (A) is true but (R) is false
• D. (A) is false but (R) is true

Answer 1

Answer: (B)

Both (A) and (R) are true but (R) is not the correct explanation of (A)

Answer 2

The correct answer is (B): Both (A) and (R) are true but (R) is not the correct explanation of (A).
The outer most shell of Boron is 2 and its maximum covalency is 4.
Therefore, boron cannot form BF63-.
Hence Assertion is correct.
Boron is the first element of group-13 of modern periodic table. It is very small in size.
But it does not provide correct explanation of Assertion.