Question

Oxygen atom had atomic number 8 and nitrogen had atomic number 7. Calculate the total number of electrons in nitrate ion.

Answer 1

number of electron in nitrogen=7

number of electron in oxygen=8

formula of nitrate=NO3^-1

number of electron= 1*number of electron in nitrogen+ 3*number of electron in oxygen+1

=1*7+3*8+1

=7+24+1

=32