Answer to Question #83066 in Electricity and Magnetism for Abdul Rasheed

Question

What do you mean when we say that the atom is existed?

Answer 1

When we say that the atom is excited (it appears that there was a misspelling in this word in the question), we mean that its electronic system occupies energy level different from the background (or lowest) energy level. In this case, an atom usually can release its energy by emitting a photon and passing to a lower-energy level.