Question

State one drawback of Rutherford's model of the atom .what modifications Rutherford's model were suggested by Bohr ? State two limitation of Bohr's model of atom .

Answer 1

Dear student,
Drawback of Rutherford model:
According to Rutherford’s model, the electrons, while moving in their orbits, would give up energy. This would make them slow down, gradually and move towards the nucleus. The electrons will follow a spiral path and then fall into the nucleus. Ultimately, the atom would collapse. But in reality the atom is stable.
Bohr improved Rutherford's model by proposing that electrons travelled about the nucleus in orbits that had specific energy levels.
They could jump from one level to another but could not be at any place in between, and they would absorb or emit specific amounts of energy (quanta) when they jumped between levels.
Limitations of Bohr model
1) Bohr’s model did not apply to elements like helium and lithium and the higher elements containing more than one electron.
​​ 2) The model was also unable to explain the structure of chemical bonds.