Question

The integers, which identify the stationary states of an atom, are called:​

Answer 1

Answer:

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The stationary states of an atom are numbered in order of increasing energy: E1 < E2 < E3 < E. The lowest energy state(most stable) of an atom with energy E1, is called the ground state of the atom. Other stationary states with energies E2, E3, E4, … are called excited states of the atom.