Answer:
the fixed amount of energy that a system described by quantum mechanics, such as a molecule, atom, electron, or nucleus, can have.
Explanation:
Energy levels (also called electron shells) are fixed distances from the nucleus of an atom where electrons may be found. Electrons are tiny, negatively charged particles in an atom that move around the positive nucleus at the center. Energy levels are a little like the steps of a staircase.
C
Explanation:
The error taught us an expensive lesson
Answer:
There isn't a "tion" version of release. You could say releasing or released. That's about it, unless you use a synonym.
Explanation:
