The ionization potential of an atom is defined as the energy required to completely remove an electron . using Bohr's theory , calculate the ionization potential of the hydrogen atom?

1 Answer
Feb 1, 2018

See the calculation in the explanation below...

Explanation:

The stationary state energies for a hydrogen atom, in Bohr's model are calculated from the formula

E_n=(-1311)/n^2 (kJ)/"mol"En=1311n2kJmol

where -1311 kJ/mol is a constant that Bohr objected in his calculations. Its value depends only on physical constants such as the mass and charge of the electron (and Planck's constant), and nn is the number of the energy level (or orbit).

The ground state corresponds to n=1n=1, the lowest possible energy, and the orbit closest to the nucleus.

E_1 = (-1311)/1^2 = -1311 (kJ)/"mol"E1=131112=1311kJmol

The ion state, where the electron has been removed from the atom corresponds to nrarroon, at which point E=0E=0.

The ionization energy is the difference between these two levels:

IE= 0 - (-1331) = 1311 kJ/"mol"IE=0(1331)=1311kJmol