1.

(A) : PF_(5),PCl_(5) and PBr_(3) are known, the pentahalides of nitrogen have not been observed (R ) Phosphorous has lower electronegativity than nitrogen.

Answer»

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

ANSWER :2


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