What is excited state?

How much energy is needed to excite an electron in H-atom from ground state to first excited state?

Calculate the energy of a He^(+)ion in its first excited state solution

The total energy of an electron in the first excited state of hydrogen atom is about –3.4 eV. Its kinetic energy in this state is

The total energy of an electron in the first excited state of hydrogen atom is about -3.4 eV. Its potential energy in this state is

A hot gas emites radition of wavelength 46.0nm ,82.8nm and 103.5nm only Assume that the atoms have only two excited state and the difference between consecutive energy levels decrease as energy is increased Taking the energy of the higest energy state to be zero find the energies of the ground state and the first excited state

What is steady state ?