The correct option is D With solid AgNO3,P reacts to produce a yellow compound, P reacts with a solution of AgNO3 to give a black compound
4AsCl3+3NaBH4⟶4AsH3+3NaCl+3BCl3
a) AsH3⟶3H2+2As
We know that As is poisonous.
b) In AsH3, the bond angle is 91∘, which suggests that it is not sp3 hybridised. This is because elements below the 2nd period do not undergo hybridisation with electropositive elements like hydrogen. (Drago's rule).
c) 2AsH3+3O2→As2O3+3H2O
d) With solid AgNO3,AsH3 reacts to produce yellow Ag4AsNO3, whereas AsH3 reacts with a solution of AgNO3 to give black Ag3As.