Question

The modern atomic theory takes up the wave concept, principle of uncertainty and other latest discoveries to give a clear-cut picture about an atom. State the findings of modern atomic theory.

Answer 1

The modern atomic theory was based on Neil Bohr's model.

Its findings are as follow:

$I)$ An electron revolve around a heavy mass known as nucleus which was discovered by Rutherford $\alpha$ ray scattering experiment.

$II)$ Electron revolve in certain orbits called Stationary Orbits which do not obey Maxwell's law of electrodynamics. (Bohr)

$III)$ Each orbit has its own associated energy.

$IV)$ Absorption of energy takes place when an electron jumps from lower orbit to higher orbit.

$V)$ Emission of energy takes place when an electron jumps from a higher orbit to lower orbit.

$VI)$ Heisenberg told that either one of position or momentum is defined precisely either one is uncertain which contradicted Bohr's Theory.