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The Bohr model of the atom is based on four fundamental postulates. Although he did not claim to explain or prove these postulates, Bohr found that by applying them, he could predict the properties of single-electron atoms and ions to an amazing degree of accuracy. Using the Bohr model, it is possible to accurately predict the energy levels of all one-electron atoms and ions, such as H, He+, Li2+ Be3+, B4+, C5+, etc.

The four key postulates of Bohr's theory are:

1) Atoms have well-defined electron orbits.

2) Atoms do not radiate.

3) Electrons travel in circular orbits with specific angular momenta, and only certain values are possible (angular momentum is quantized).

4) As electrons go from one orbit to the next, energy is either absorbed or released by the atom.

The quantized angular momentum can be written as:

I = n * (h/2*pi)

where I is the angular momentum, n is any integer, h is Planck's constant, and pi is the number pi, or 3.14159.

See Web Links and Related QuestionsSee the Related Questions and Web Links to the left for the answer. Overview of the Bohr ModelNiels Bohr proposed the Bohr Model of the Atom in 1915. Because the Bohr Model is a modification of the earlier Rutherford Model, some people call Bohr's Model the Rutherford-Bohr Model. The modern model of the atom is based on quantum mechanics. The Bohr Model contains some errors, but it is important because it describes most of the accepted features of atomic theory without all of the high-level math of the modern version. Unlike earlier models, the Bohr Model explains the Rydberg formula for the spectral emission lines of atomic hydrogen.The Bohr Model is a planetary model in which the negatively-charged electrons orbit a small, positively-charged nucleus similar to the planets orbiting the Sun (except that the orbits are not planar). The gravitational force of the solar system is mathematically akin to the Coulomb (electrical) force between the positively-charged nucleus and the negatively-charged electrons.

Main Points of the Bohr Model- Electrons orbit the nucleus in orbits that have a set size and energy.
- The energy of the orbit is related to its size. The lowest energy is found in the smallest orbit.
- Radiation is absorbed or emitted when an electron moves from one orbit to another. Bohr Model of HydrogenThe simplest example of the Bohr Model is for the hydrogen atom (Z = 1) or for a hydrogen-like ion (Z > 1), in which a negatively-charged electron orbits a small positively-charged nucleus. Electromagnetic energy will be absorbed or emitted if an electron moves from one orbit to another. Only certain electron orbits are permitted. The radius of the possible orbits increases as n2, where n is the principal quantum number. The 3 → 2 transition produces the first line of the Balmer series. For hydrogen (Z = 1) this produces a photon having wavelength 656 nm (red light).

- It violates the Heisenberg Uncertainty Principle because it considers electrons to have both a known radius and orbit.
- The Bohr Model provides an incorrect value for the ground state orbital angular momentum.
- It makes poor predictions regarding the spectra of larger atoms.
- It does not predict the relative intensities of spectral lines.
- The Bohr Model does not explain fine structure and hyperfine structure in spectral lines.
- It does not explain the Zeeman Effect.

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The Bohr model of the atom was a planetary model.

The Bohr model of an atom was of planetary type.

The Bohr atomic model is a planetary model.

the bohr model for hydrogen is H

The Bohr atomic model, now obsolete, is a planetary model.

the Bohr model of the atom

No. Before the Bohr model ,the most accepted model was the Rutherford model of the atom. Before that there was the plum-pudding model.

The Bohr model suggest a planetary system for the atom.

The atomic model of Niels Bohr was of planetary type.

The Bohr model of the atom is from 1913.

The Niels Bohr model of atom is of planetary type.

The Bohr model explain the structure of an atom.

An atom does not have a nucleolus, but it does have an atomic nucleus which is located in the center of the atom, including the Bohr model.

A typical Model of an atom is a bohr model

The current model of an atom is called the Bohr model.

Neils Bohr discovered the atom in 1913

The quantum mechanical model of the atom wasn't proposed by Niels Bohr.

Describe bohrs model of the hydrogen atom

Niels Bohr in fact based his model on the hydrogen atom. However, I wouldn't say that the Bohr Model can be correctly applied to ANY atom. Whilst it is an excellent approximation it is not truly accurate. Please don't forget that the Bohr Model is just that, a model, and a model is never as accurate as the real thing.

The Bohr atomic model is similar to solar system.

The Electron Cloud model

Today the quantum model of atom is accepted.

The Bohr Model is the modern name used by scientist for a model of an atom, which is often referred to as the Rutherford-Bohr model due to the fact that Neils Bohr just improved Ernest Rutherfords model.

Rutherford who compared the nucleus to the sun and the electrons ,move arround it NOT BOHR ,and this model of atom called (planetary)

Bohr model