Question

multiple select question
select all that apply
the second row of the periodic table

□ has elements with two occupied energy levels.
□ includes eight elements.
□ ends with the noble gas neon.
□ includes the elements sodium, magnesium, and argon, among others.

Explanation:

• For the first option: In the periodic table, the row number corresponds to the number of occupied energy levels. So, elements in the second row have two occupied energy levels.
• For the second option: The second row of the periodic table has 8 elements (lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, neon).
• For the third option: The noble gas in the second row is neon (\(Ne\)).
• For the fourth option: Sodium (\(Na\)) is in the third row, magnesium (\(Mg\)) is in the third row, and argon (\(Ar\)) is in the third row.

Answer:

• has elements with two occupied energy levels.
• includes eight elements.
• ends with the noble gas neon.