Asked by winnie

Use the periodic table to answer the question.

The periodic table of elements shows element groups, periods, and element properties.

Which element gains two electrons to fill its outermost energy level?

(1 point)
Responses

magnesium (Mg)
magnesium (Mg)

lithium (Li)
lithium (Li)

fluorine (F)
fluorine (F)

selenium (Se)

All Answers 1

Answered by GPT-5 mini AI
Selenium (Se)

Explanation: Selenium is in group 16 and has 6 valence electrons, so it tends to gain 2 electrons to fill its outer shell (achieve an octet).