Question

Which of the following gives proof of quantized electronic energy levels in hydrogen atom?

• A. Atomic spectrum
• B. Photoelectric effect
• C. Emission of blackbody radiation
• D. Davisson - Germer experiment

Hint:

The atomic spectrum of hydrogen consists of discrete spectral lines, which provide evidence for the quantization of energy levels in the atom. This was a fundamental observation in the development of quantum mechanics.

Answer 1

The Correct Option is A

The atomic spectrum of hydrogen provides proof of quantized electronic energy levels. When an electron in a hydrogen atom absorbs energy, it moves to a higher energy level. When it returns to a lower energy level, it emits light with a specific wavelength, creating discrete spectral lines. These spectral lines correspond to specific energy levels, thus providing proof that the energy levels of electrons in the hydrogen atom are quantized.