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

Question

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) Bi2O5 (B) BiF5 (C) BiCl5 (D) Bi2S5

Tardigrade Admin · Accepted Answer

The stability of +5 oxidation state decreases down the group due to inert pair effect. The only well characterised Bi(V) compound is BiF5 as fluorine being most electronegative element is able to unpair ns electrons.

Q. 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

$B i_{2} O_{5}$

$B i F_{5}$

$B i C l_{5}$

$B i_{2} S_{5}$

The stability of $+ 5$ oxidation state decreases down the group due to inert pair effect. The only well characterised $B i (V)$ compound is $B i F_{5}$ as fluorine being most electronegative element is able to unpair $n s$ electrons.

Q. 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

Bi2​O5​

BiF5​

BiCl5​

Bi2​S5​