White phosphorus on reaction with concentrated NaOH solution in an inert atmosphere of CO2 gives phosphine and compound (X). (X) on acidification with HCl gives compound (Y). The basicity of compound (Y) is :

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Compounds of Nitrogen Family

Question

White phosphorus on reaction with concentrated NaOH solution in an inert atmosphere of CO₂ gives phosphine and compound (X). (X) on acidification with HCl gives compound (Y). The basicity of compound (Y) is :

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$P_{4} + NaOH + H_{2} O \to_{}^{} {PH}_{3} + {NaH}_{2} {PO}_{2} \to_{}^{HCl} H_{3} {PO}_{2}$

Bsicity = 1