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 doun the group

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