1.

(A): Thermal stability of the hydrides of VIA group elements decreases from H_(2)O to H_(2)Po (R): The heats of dissociation of M-H bond of hydrides of VIA group decreases down the group

Answer»

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

Answer :A


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