Concept:An atom is excited when one of its electrons gains energy and moves to a higher energy level.
Explanation:In the ground state, electrons occupy the lowest available energy levels.
When an atom absorbs energy, an electron jumps from a lower energy level to a higher one.
This higher-energy state is called the excited state.
The atom’s potential energy is not the deciding factor here.
Conduction band electrons are related to solids, not to a single excited atom.
Thus, the correct description is that electrons have moved to a higher energy level.
Answer:D. electron have moved to higher energy level