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 different energy levels.
They have valence electrons in different energy levels.

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 the same energy level.

Answer 1

The correct statement is:

They have valence electrons in the same energy level.

Nitrogen (N) and oxygen (O) are both in the same period (Period 2) of the periodic table, meaning they have their valence electrons in the same principal energy level, which is the second energy level (n=2). However, they have different numbers of valence electrons: nitrogen has 5 valence electrons, and oxygen has 6 valence electrons.