List of top Chemistry Questions on Phosphorus

Boron has two isotopes with atomic masses 10 and 11. If its average atomic mass is 10.81, the abundance of the lighter isotope is:

The oxidation state of phosphorus in hypophosphoric acid is + _____

Identify the incorrect statement related to PCI from the following:
The number of $P - O$ bonds in $P_4O_6$ is :