Which of the following properties is true for | vedclass

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(B) The thermal stability of the hydrides of group $15$ elements decreases down the group as $NH_{3} > PH_{3} > AsH_{3} > SbH_{3} > BiH_{3}$.As we mov

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Thermal stability

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(B) The thermal stability of the hydrides of group $15$ elements decreases down the group as $NH_{3} > PH_{3} > AsH_{3} > SbH_{3} > BiH_{3}$.As we move down the group,the atomic size of the central atom increases (from $N$ to $Bi$).This leads to an increase in the bond length and a decrease in the bond dissociation enthalpy (bond strength).Consequently,the thermal stability decreases.

Which of the following properties is true for the given sequence? $NH_{3} > PH_{3} > AsH_{3} > SbH_{3} > BiH_{3}$

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