question_answer

White phosphorus on reaction with concentrated \[NaOH\]solution in an inert atmosphere of \[C{{O}_{2}}\]gives phosphine and compound (X). (X) on acidification with \[HCl\] gives compound (Y). The  basicity of compound (Y) is [JEE MAIN Held on 08-01-2020 Evening]

A) 3                     

B) 2

C) 4                     

D) 1

Correct Answer: D

Solution :

Basicity of \[{{H}_{3}}\underset{\left( Y \right)}{\mathop{P{{O}_{2}}}}\,=1\]