Question

An atom of selenium (Se) forms a monatomic ion. Which of the following ions does it most likely form?

Se2+

Se2

Se6+

Se6

*Not expecting an answer, but an explanation to how to figure it out?*

Answer 1

i didn't know Selenium was considered "organic"? :P

atoms form ions that mimic the electronic structure of noble gases. so add or subtract electrons from the atom to achieve the configuration of a noble gas.