Question

which of the following showed electrons in specific, fixed orbits?
a rutherford model
b planck model
c bohr model
d quantum model

Explanation:

• The Rutherford Model proposed a nuclear - like structure of the atom but did not define fixed electron orbits.
• The Planck Model was related to quantum theory of energy quantization, not electron orbits.
• The Bohr Model of the atom proposed that electrons orbit the nucleus in specific, fixed energy levels (orbits).
• The Quantum Model (also known as the electron - cloud model) describes electrons in terms of probability clouds rather than fixed orbits.

Answer:

C. Bohr Model