Mention the merits of Bohr’s model of atomic structure. What are the old and new concept Bohr introduced in his model?
Merits of Bohr’s model:
- Explained the stability of an atom by quantizing electron energy levels.
- Successfully explained the atomic spectra of hydrogen.
- Introduced the concept of quantization of angular momentum.
- Opened the path for the development of quantum mechanics.
|Old concept||New concept|
|The electron orbits the nucleus.||Electrons move in fixed circular orbits of specific energy levels.|
|No explanation for the stability of the atom.||Explains the stability of an atom.|
|No explanation for the origin of the spectral lines.||Explains the origin of the spectral lines by the transitions of electrons between different energy levels.|
|Electrons can lose energy continuously.||Electrons can only lose or gain energy by jumping from one energy level to another in a discrete way.|