What is the molecular formula of sodium phosphate?

1 Answer
Dec 22, 2015

Answer:

#Na_3PO_4#

Explanation:

This is so since sodium is in group #1# so has a valency of #1+# while phosphate is a polyatomic ion of valency #3-# and thus we need #3# sodium atoms for each #1# phosphate ion, hence, #Na_3PO_4#.
Overall nett charge of molecule must be zero.

The ions will be held together by strong ionic bonds and the molecules by strong coulombic forces of attraction.