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  4. On heating with concentrated NaOH solution in an inert atmosphere of CO2 white phosphorous gives a gas. Which of the following statement is incorrect about the gas ?

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Q. On heating with concentrated $NaOH$ solution in an inert atmosphere of $CO_2$ white phosphorous gives a gas. Which of the following statement is incorrect about the gas ?

KCETKCET 2015The p-Block Elements - Part2

Solution:

On heating with concentrated $NaOH$ in an inert environment of $CO _{2}$, it forms $PH _{3} \cdot P _{4}+3 NaOH +3 H _{2} O \rightarrow PH _{3}+3 NaH _{2} PO _{2}$.
$PH _{3}$ is more basic than $NH _{3}$ as we move frrom top to to bottom in a group the basic nature of hydrides decreases.