Elements of group - 15 form compounds in + 5 oxidation state. However, bismuth forms only one well characterised compound in + 5 oxidation
state. The compound is
A.
$$B{i_2}{O_5}$$
B.
$$Bi{F_5}$$
C.
$$BiC{l_5}$$
D.
$$B{i_2}{S_5}$$
Answer :
$$Bi{F_5}$$
Solution :
The stability of + 5 oxidation state decreases down the group due to inert pair effect. The only well characterised $$Bi\left( V \right)$$ compound is $$Bi{F_5}$$ as fluorine being most electronegative
element is able to unpair $$ns$$ electrons.
Releted MCQ Question on Inorganic Chemistry >> P - Block Elements
Releted Question 1
The reddish brown coloured gas formed when nitric oxide is oxidised by air is