Bohr's Atom Model: Kepler's Law & Elliptical Orbits

In summary, Bohr developed his model of the atom by starting with the simplest model first, which consisted of circular orbits for the electrons. He found that this model could accurately explain the behavior of the hydrogen atom. Although it may seem more logical to assume elliptical orbits based on the analogy between gravitational and electrostatic forces, Bohr realized that the simplicity of circular orbits was sufficient. Additionally, in Bohr's model, electrons exist in discrete energy levels, and an elliptical orbit would lead to constant emission and absorption of photons.
  • #1
gandharva_23
61
0
When bohr gave his model of atom kepler's law already existed ... What made him think that the electrons revolve around the neucleus in circular orbits ? The obvious assumption that should have come to his mind looking at the analogy between the gravitational and electrostatic force should have been of elliptical orbits ?
 
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  • #2
When you work on something new, you start with the simplest model first. Circular orbits are simple. And when you obtain results that actually could fit the experimental observations for the hydrogen atom, you realize that you don't have to make it any more difficult than necessary.

Zz.
 
  • #3
You could also say that in Bohrs model, electrons exist in discrete energy levels. An elliptical orbit would create energy differences at different points in the orbit. This would lead to constant emmission and absorption of photons spontaneously
 

What is Bohr's Atom Model?

Bohr's Atom Model is a simplified model of the atom proposed by Danish physicist Niels Bohr in 1913. It describes the structure of the atom with a nucleus containing protons and neutrons, and electrons orbiting around the nucleus in discrete energy levels.

What is the significance of Kepler's Laws in Bohr's Atom Model?

Kepler's Laws of Planetary Motion, which describe the motion of planets around the sun, were used by Bohr to develop his model of the atom. These laws helped him understand the behavior of electrons in their orbits around the nucleus, and how they transition between energy levels.

How does Bohr's Atom Model explain the stability of atoms?

According to Bohr's Atom Model, electrons can only exist in a set of discrete energy levels, and they do not emit energy while orbiting in a stable energy level. This explains the stability of atoms, as the electrons are not constantly losing energy and collapsing into the nucleus.

Can Bohr's Atom Model explain the behavior of complex atoms?

No, Bohr's Atom Model is a simplified model that only works for atoms with one electron. It cannot fully explain the behavior of complex atoms with multiple electrons, as it does not account for the interactions between these electrons.

What are the limitations of Bohr's Atom Model?

Bohr's Atom Model only works for simple atoms and does not account for the wave-like behavior of electrons. It also does not fully explain the behavior of atoms in chemical reactions. Modern atomic models, such as the quantum mechanical model, have replaced the Bohr model for more accurate descriptions of atomic behavior.

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