Question

multiple choice question
which is the term for the major energy levels of the atom, specified by n?
o electron shells
o principal energy levels
o energy sublevels
o atomic orbitals

Explanation:

Principal energy levels are the major energy levels of an atom, specified by the principal quantum number \(n\). Electron shells are a related concept but not the term specifically for major energy levels defined by \(n\). Energy sublevels (like \(s\), \(p\), \(d\), \(f\)) are within principal energy levels. Atomic orbitals are regions where electrons are likely to be found within sublevels. So the correct term for major energy levels specified by \(n\) is principal energy levels.

Answer:

principal energy levels