Question

What term describes a region of space around an atom that has a non-zero probability for an electron with a particular energy?

Answer 1

atomic orbital

An atomic orbital is a region of space around an atom that has a non-zero probability for an electron with a particular energy. Analogously, a molecular orbital is a region of space in a molecule that has a non-zero probability for an electron with a particular energy. Both an atomic orbital and a molecular orbital can contain two electrons.