Question

why has Bi valency 5​

Answer 1

Answer:

In group 15, the stability of the +5 oxidation state decreases from P to Bi. Because neutral covalent compounds of the trivalent group 15 elements have a lone pair of electrons on the central atom, they tend to be Lewis bases.

Explanation:

Answer 2

Answer:

Explanation:

because only 5 ionisation enthalpys are possible for bismuth

6 ionsiation enthaply is not possible because difference between 6th and 5 th

ionisation enthalpy is greater than 16.2 electron volts