Question

1. which statement best describes two substances forming a covalent bond? two nonmetals combine because they equally share ionization energy. two nonmetals combine because they share valence electrons. a metal and a nonmetal combine because they have opposite charges. a metal and a nonmetal combine because they unequally share electrons.

Explanation:

Covalent bonds form when non - metals share valence electrons. Ionization energy isn't shared in bonding. Metal - nonmetal combinations form ionic bonds (due to charge transfer, not unequal sharing in covalent sense here). So the correct description is about nonmetals sharing valence electrons.

Answer:

B. Two nonmetals combine because they share valence electrons.