Which of the following is the correct statement for PH_3 ?

Which of the following is the correct statement for

\mathrm{PH}_3

Options

AIt is less poisonous than $\mathrm{NH}_3$ .
BIt is less basic than $\mathrm{NH}_3$ .
CElectronegativity of $\mathrm{PH}_3>\mathrm{NH}_3$ .
DIt does not show reducing properties.

Correct answer

B. It is less basic than $\mathrm{NH}_3$ .

Step-by-step solution

Nitrogen is more electronegative and smaller in size than phosphorus. Therefore, the lone pair is concentrated on a small region and has maximum electron density. So,

\mathrm{NH}_3

is more basic than

\mathrm{PH}_3

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