Table of Contents
- 1 What did Bohr discover when he observed the spectra of hydrogen?
- 2 What did the Bohr model explain about hydrogen?
- 3 How does Bohr model explain the line spectrum of hydrogen?
- 4 What did the Bohr model discover?
- 5 Why did Bohr use hydrogen for his line spectrum experiments?
- 6 What does the Bohr theory explain?
- 7 Who explained spectrum of hydrogen?
- 8 Why does Bohr’s model only work for hydrogen?
What did Bohr discover when he observed the spectra of hydrogen?
Based on the wavelengths of the spectral lines, Bohr was able to calculate the energies that the hydrogen electron would have in each of its allowed energy levels. He then mathematically showed which energy level transitions corresponded to the spectral lines in the atomic emission spectrum ( Figure 2).
What did the Bohr model explain about hydrogen?
Niels Bohr introduced the atomic Hydrogen model in 1913. He described it as a positively charged nucleus, comprised of protons and neutrons, surrounded by a negatively charged electron cloud. In the model, electrons orbit the nucleus in atomic shells.
What did Bohr discover and what was his model called?
In 1913 Bohr proposed his quantized shell model of the atom to explain how electrons can have stable orbits around the nucleus.
How does Bohr model explain the line spectrum of hydrogen?
Niels Bohr explained the line spectrum of the hydrogen atom by assuming that the electron moved in circular orbits and that orbits with only certain radii were allowed.
What did the Bohr model discover?
Atomic model The Bohr model shows the atom as a small, positively charged nucleus surrounded by orbiting electrons. Bohr was the first to discover that electrons travel in separate orbits around the nucleus and that the number of electrons in the outer orbit determines the properties of an element.
Who discovered hydrogen spectra?
The series is named after its discoverer, Theodore Lyman, who discovered the spectral lines from 1906–1914. All the wavelengths in the Lyman series are in the ultraviolet band….Lyman series (n′ = 1)
| n | λ, vacuum (nm) |
|---|---|
| ∞ | 91.175 |
| Source: |
Why did Bohr use hydrogen for his line spectrum experiments?
Explanation: Bohr based this assumption on the fact that there are only a few lines in the spectrum of the hydrogen atom and he believed that the lines were the result of light being released or absorbed as an electron moved from one orbit to another in the atom. As the electron relaxed it would release energy.
What does the Bohr theory explain?
Bohr theory. noun. a theory of atomic structure that explains the spectrum of hydrogen atoms. It assumes that the electron orbiting around the nucleus can exist only in certain energy states, a jump from one state to another being accompanied by the emission or absorption of a quantum of radiation.
What did the Bohr model find?
The Bohr model shows that the electrons in atoms are in orbits of differing energy around the nucleus (think of planets orbiting around the sun). Bohr used the term energy levels (or shells) to describe these orbits of differing energy.
Who explained spectrum of hydrogen?
Niels Bohr proposed a model for the hydrogen atom that explained the spectrum of the hydrogen atom. The Bohr model was based on the following assumptions. The electron in a hydrogen atom travels around the nucleus in a circular orbit.
Why does Bohr’s model only work for hydrogen?
Because hydrogen and hydrogen-like atoms only have one electron and thus do not experience electron correlation effects.
What is the Bohr’s model theory?
noun Physics. a theory of atomic structure in which the hydrogen atom (Bohr atom ) is assumed to consist of a proton as nucleus, with a single electron moving in distinct circular orbits around it, each orbit corresponding to a specific quantized energy state: the theory was extended to other atoms.