Which one of the following hydrides is least | vedclass

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(B) The thermal stability of the hydrides of Group $15$ elements decreases down the group as the size of the central atom increases,which leads to a d

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$SbH_3$

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(B) The thermal stability of the hydrides of Group $15$ elements decreases down the group as the size of the central atom increases,which leads to a decrease in the bond dissociation energy.The order of stability is: $NH_3 > PH_3 > AsH_3 > SbH_3 > BiH_3$.Therefore,$SbH_3$ is the least stable among the given options.

Which one of the following hydrides is least stable?

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