Two representative elements,

Question

nitrogen and oxygen, are in
the same period of the
periodic table. Which
statement correctly describes
the atoms of the two
elements? (1 point)
They have valence
electrons in different
energy levels.
They have the same
number of valence
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 found in the second period of the periodic table. As such, they have their valence electrons in the same energy level (specifically, the second energy level). Nitrogen has 5 valence electrons (2 in the first energy level and 3 in the second), while oxygen has 6 valence electrons (2 in the first energy level and 4 in the second), but they both occupy the same energy level for their valence electrons.