-3
The neutrals phosphorus carry zero charge atoms.
The most common charge for phosphorus is -3, as it typically forms an anion by gaining three electrons to achieve a stable electron configuration.
Phosphorus is number 15 on the Periodic Table of Elements. The most common charge is -3 because it needs three more electrons to fill it's outer shell.
The most common charge for sulfur is -2.
A Magnesium ion has a charge of 2+.
The most common charge for an iodine ion is -1.
Water is the most common molecular subsance found in the human body(~98%). and phosphorous is the most abundant element in human body.
-2
-3
The most common electric charge for a calcium cation is +2.
The most common charge of magnesium is +2.
Phosphorus-31 is the most common isotope. (Wikipedia)