Two representative elements, nitrogen and oxygen, are in the same period of the periodic table. Which statement correctly describes the atoms of the two elements? (1 point)

Question

• They have valence electrons in the same energy level.
• They have the same number of valence electrons.
• They have valence electrons in different energy levels.
• They have the same number of electrons.

Answer 1

The correct statement is: They have valence electrons in the same energy level.

Nitrogen (atomic number 7) and oxygen (atomic number 8) are both located in period 2 of the periodic table, which means they have their valence electrons in the second energy level.