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

Responses

They have valence electrons in the same energy level.
They have valence electrons in the same energy level.

They have the same number of valence electrons.
They have the same number of valence electrons.

They have the same number of electrons.
They have the same number of electrons.

They have valence electrons in different energy levels.

Answer 1

The correct statement is:

They have valence electrons in the same energy level.

Nitrogen (N) and oxygen (O) are both in the second period of the periodic table, which means their valence electrons are in the second energy level (n=2). However, they do not have the same number of valence electrons: nitrogen has 5 valence electrons, while oxygen has 6.