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The following are some statements related to VA group hydrides,
I. Reducing property increases from $\mathrm{NH}_3$ to $\mathrm{BiH}_3$.
II. Tendency to donate lone pair decreases from $\mathrm{NH}_3$ to $\mathrm{BiH}_3$.
III. Thermal stability of hydrides decreases from $\mathrm{NH}_3$ to $\mathrm{BiH}_3$.
IV. Bond angle of hydrides decreases from $\mathrm{NH}_3$ to $\mathrm{BiH}_3$.
The correct statements are
Options:
I. Reducing property increases from $\mathrm{NH}_3$ to $\mathrm{BiH}_3$.
II. Tendency to donate lone pair decreases from $\mathrm{NH}_3$ to $\mathrm{BiH}_3$.
III. Thermal stability of hydrides decreases from $\mathrm{NH}_3$ to $\mathrm{BiH}_3$.
IV. Bond angle of hydrides decreases from $\mathrm{NH}_3$ to $\mathrm{BiH}_3$.
The correct statements are
Solution:
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Verified Answer
The correct answer is:
I, II, III and IV
The reducing property of the hydrides of $\mathrm{VA}$ group increases from $\mathrm{NH}_3$ to $\mathrm{BiH}_3$
$\mathrm{NH}_3 < \mathrm{PH}_3 < \mathrm{AsH}_3 < \mathrm{SbH}_3 < \mathrm{BiH}_3$
The tendency to donate lone pair or basic strength decreases from $\mathrm{NH}_3$ to $\mathrm{BiH}_3$.
Thermal stability of VA group hydrides decrease from $\mathrm{NH}_3$ to $\mathrm{BiH}_3$
$\mathrm{NH}_3>\mathrm{PH}_3>\mathrm{AsH}_3>\mathrm{SbH}_3>\mathrm{BiH}_3$
Bond angle of VA group hydrides decreases from $\mathrm{NH}_3$ to $\mathrm{BiH}_3$
$\mathrm{NH}_3>\mathrm{PH}_3>\mathrm{AsH}_3>\mathrm{SbH}_3>\mathrm{BiH}_3$
$\mathrm{NH}_3 < \mathrm{PH}_3 < \mathrm{AsH}_3 < \mathrm{SbH}_3 < \mathrm{BiH}_3$
The tendency to donate lone pair or basic strength decreases from $\mathrm{NH}_3$ to $\mathrm{BiH}_3$.
Thermal stability of VA group hydrides decrease from $\mathrm{NH}_3$ to $\mathrm{BiH}_3$
$\mathrm{NH}_3>\mathrm{PH}_3>\mathrm{AsH}_3>\mathrm{SbH}_3>\mathrm{BiH}_3$
Bond angle of VA group hydrides decreases from $\mathrm{NH}_3$ to $\mathrm{BiH}_3$
$\mathrm{NH}_3>\mathrm{PH}_3>\mathrm{AsH}_3>\mathrm{SbH}_3>\mathrm{BiH}_3$
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