Question

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) they have the same number of electrons. they have the same number of valence electrons. they have valence electrons in the same energy level. they have valence electrons in different energy levels.

Explanation:

Elements in the same period of the periodic table have their out - most electrons (valence electrons) in the same principal energy level. Nitrogen and oxygen are in the second period. Nitrogen has 7 electrons with 5 valence electrons in the 2s and 2p orbitals, and oxygen has 8 electrons with 6 valence electrons in the 2s and 2p orbitals. They have valence electrons in the same energy level (n = 2).

Answer:

They have valence electrons in the same energy level.