Name: Bohr Atom Model: Frequency of Emitted Radiation
Uploaded: 2019-07-19
Duration: 3 min 54 s
Description: Electrons jump in different energy levels. Let's understand how we can calculate the frequency of emitted and absorbed radiation as electrons transition into...

Question

Distinguish between excitation potential and ionization potential.

Accepted Answer

Excitation potential

When an electron revolving in an orbit absorbs sufficient energy, it jumps into an orbit of higher energy. This process is called excitation of electron. The minimum potential that provides an electron sufficient energy to jump from the ground state to some higher state is called excitation potential.

For example, the energy $E$ required by an electron in a hydrogen atom to jump from ground state to first excited state is:

$E = E_{2} - E_{1} \Rightarrow - 3.4 - (- 13.6) \Rightarrow 10.2 eV$

Therefore, the excitation potential of an electron in a hydrogen atom for it to move from the ground state to first excitation state is $10.2 eV$ .

Ionization potential

When an electron revolving in an orbit is provided with sufficient energy so that it gets removed from the outermost orbit of an atom is called ionization. The minimum potential required to completely remove an electron from the atom is called the ionization potential.

For example, an electron in its ground state in a hydrogen atom has an energy of $- 13.6 eV$ . To completely remove this electron from the atom, energy of $+ 13.6 eV$ is required.

Therefore, ionization potential of a hydrogen atom is $13.6 eV$ .

Distinguish between excitation potential and ionization potential.

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