Question

1. How much energy is required to ionise a hydrogen atom if the electron
occupies fifth orbit ?​

Answer 1

Explanation:

0.544eV energy is required to ionise H-atom of electron is in 5th orbit .

Answer 2

Answer:

For a hydrogen atom, composed of an orbiting electron bound to a nucleus of one proton, an ionization energy of 2.18 × 10−18 joule (13.6 electron volts) is required to force the electron from its lowest energy level entirely out of the atom.