What is an excited state of an atom ?

Explain the meaning of ground state and excited state of an atom?

Which of the following represents an excited state of an atom?

Which of the following represents an excited state of an atom?

What is the ground state of an atom ? And what is the ionization energy and excitation energy of a hydrogen atom ?

What is the ratio of the frequency of electrons rotating in the ground state to that in the first excited state of an atom?

which of the following representations of excited states of atoms is impossible?

Which of the following representations of excited states of atoms is impossible?

What is the kineitc energy of the electron in the 2nd excited state of hydrogen atom?

The ratio of energies of electron in the first excited state to its second excited state in H-atom is ......