PLEASE HELP , 50 points!

Write the electron configuration of a -2 ion with 16 protons.

1s^2 2s^2 2p^6 3s^2 3p^6

Explanation:

Number of electrons = Number of protons. Originally, sulfur has 16 protons, but the question asks states 2- ions. So S^(2-), or a total of 18 protons. Follow the rules, and make sure the exponents add up to 18. 2 + 2 + 6 + 2 + 6 = 18 electrons.

answer; i do believe the correct answer is (river); /// good luck

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.