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  • Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Boron is unable

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 \mathrm{\mathrm{BF}_{6}^{3-}.}
Reason (R) : Size of \mathrm{B} is very small.
In the light of the above statements, choose the correct answer from the options given below :
 

Option: 1

Both (A) and (R) are true and (R) is the correct explanation of (A)

 


Option: 2

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

 


Option: 3

 (A) is true but (R) is false
 


Option: 4

 (A) is false but (R) is true


Answers (1)

best_answer

\mathrm{(A)} is true

\mathrm{(B)} is true  but \mathrm{(R)} is not correct explanation of \mathrm{(A)}.

Boron is unable to form \mathrm{B F_{6}^{3-}} due to absence of \mathrm{d}-orbital or unable to expand octet in Boron.

Option (2) is correct.

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manish

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