Question

Ionisation potential of hydrogen atom is 13.6 eV. Hydrogen atom in ground state is excited by

Answer 1

Ionization potential of hydrogen atom is 13.6 eV. Hydrogen atoms in the ground state are excited by monochromatic radiation of photon energy 12.1 eV. According to Bohr's theory, the spectral lines emitted by hydrogen will be.

Answer 2

Answer:

−13.6

where n=2

∴ E

2

=

2

2

−13.6

=−3.4eV

Thus potential energy of electron U

2

=2E

2

⟹ U

2

=2(−3.4)=−6.8eV