Question

what is the charge on the ion formed by selenium? 2+ 1- 2- 1+ none of the above submit request answer

Explanation:

Selenium (Se) is in Group 16 (or VI A) of the periodic table. Elements in this group have 6 valence electrons. They tend to gain 2 electrons to achieve a stable noble - gas electron configuration. When an atom gains electrons, it forms a negatively - charged ion. Gaining 2 electrons gives an ion with a charge of \(2-\).

Answer:

2 -