Question

which part of an atom forms covalent bonds with other atoms?
○ electrons in the outermost energy shell
○ neutrons in the outermost energy shell
○ protons in the innermost energy shell
○ protons in the outermost energy shell
○ electrons in the innermost energy shell

Explanation:

Covalent bonds form when atoms share electrons. Only electrons (not protons or neutrons) participate in bonding, and specifically, electrons in the outermost energy shell (valence electrons) are involved in forming covalent bonds. Inner shell electrons are not involved, and protons/neutrons are in the nucleus, not energy shells. Thus, the correct answer is electrons in the outermost energy shell.

Answer:

electrons in the outermost energy shell