A) It is more basic than \[N{{H}_{3}}\]
B) Its solution in water decomposes in the presence of light.
C) It is less basic than \[N{{H}_{3}}\].
D) It is highly poisonous and has smell like rotten fish.
Correct Answer: A
Solution :
: \[{{P}_{4}}+3NaOH+3{{H}_{2}}O\xrightarrow[C{{O}_{2}}]{\Delta }3Na{{H}_{2}}P{{O}_{2}}+\underset{Phosphine}{\mathop{P{{H}_{3}}\uparrow }}\,\] \[P{{H}_{3}}\] is less basic than \[N{{H}_{3}}\] as the electron density is diffused over the larger phosphorus atom.
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