Question

Nitrogen atom has an atomic number 7 and oxygen has an atomic number of 8. The total number of electrons in an nitrate ion

Answer 1

nitrogen =7 atomic number

oxygen= 8 atomic number

NO3 =7×1+8×3 = 31 electrons

but NO3 ion have negative charge so it take 1 electron from other positive charge ions.

so nitrate ion have 32 electrons