Please explain the procedure to determine the valency of polyatomic ions.

Asked by jatin452002 | 6th Jun, 2017, 07:28: PM

Expert Answer:

Consider the following examples.
SO2
The charge on S is +4 and charge on O is -2 hence +4+(2×-2)=0
Hence the charge on SO2 is zero.

SO3
The charge on S is +4 and charge on O is -2 hence +4+(3×-2)=-2
Hence the charge on SO3 is -2.
 
PO4
The charge on P is +5 and charge on O is -2 hence +5+(4×-2)=-3
Hence the charge on PO4 is -3.
 
NO3
The charge on N is +5 and charge on O is -2 hence +5+(3×-2)=-1
Hence the charge on NO3 is -1.

Answered by Vaibhav Chavan | 7th Jun, 2017, 09:50: AM