1.

(A): Thermal stability of VA group hydrides decreases from NH_(3) to BiH_(3) (R): The dissociation energy of M - H bond! increases down the group regularly

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 :3


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