First slide

Atomic and physical properties

Question

All elements of 15^th group form many compounds in +5 oxidation state. The well known only compound of Bi in +5 oxidation state is :

Moderate

A

BiF₅
B

Bi₂O₅
C

BiCl₅
D

Bi₂S₅

Solution

Due to inert pair effect (no participation of 6s² pair of electrons in bonding) that Bi⁺⁵ is not formed, yet fluorine the highest oxidising element is able to excite ns² pair for bonding by making them unpaired..

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