Question

If the number of electrons in an ion Z^-3 is 10. Give its atomic number.

Answer 1

Electrons in the ion are 10 and the - 3 charge signifies that there are three electrons more than its actual configuration. So, number of electrons in the neutral atom is 10-3=7. In a neutral atom, number of electrons equals number of protons equals atomic number =7.

Answer 2

the atomic number is 7 . nitrogen... 10-3= 7....