How did Bohr explain the emission spectra?

How did Bohr explain the emission spectra?

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.

How do you find Bohr atomic radius?

The Bohr radius is a physical constant that is equal to the distance between the nucleus and the electron of a hydrogen atom in the ground state. Its value is given by the formula 𝑎₀ = 4𝜋𝜀₀(ℎ bar)²/𝑚_e (𝑞_e)².

What is the range of Paschen series?

So the range of the wavelengths corresponding to the Paschen series is from 821.2nm to 1876.9nm . Similarly, we get the corresponding range for the Lyman series from 91nm to 122nm , and for the Balmer series from 365nm to 656nm .

How the emission of light is related to the Bohr model?

The Bohr model consists of four principles: Each orbit has an energy associated with it. For example the orbit closest to the nucleus has an energy E1, the next closest E2 and so on. Light is emitted when an electron jumps from a higher orbit to a lower orbit and absorbed when it jumps from a lower to higher orbit.

How does the Bohr theory explain the emission and absorption spectra of hydrogen?

Bohr tells us that the electrons in the Hydrogen atom can only occupy discrete orbits around the nucleus (not at any distance from it but at certain specific, quantized, positions or radial distances each one corresponding to an energetic state of your H atom) where they do not radiate energy.

What is Bohr radius value?

5.29177 x 10 -11 meter
The Bohr radius, symbolized a , is the mean radius of the orbit of an electron around the nucleus of a hydrogen atom at its ground state (lowest-energy level). The value of this radius is a physical constant; a is approximately equal to 5.29177 x 10 -11 meter (m).

What is e in Bohr radius formula?

Bohr Radius Formula me is the rest mass of electron. = ħ is the reduced Planck constant. c is the velocity of light in vacuum. α is the fine structure constant.

What is the minimum and maximum wavelength of Paschen series?

Question: What is the minimum and maximum wavelength for Paschen series? m = 4 and infinity. This gives lamda = 822 nm – 1875 nm.

What is the largest wavelength of Paschen series?

1875 angstroms
Therefore, the longest wavelength that can be achieved in Paschen’s series is 1875 angstroms.

What is the maximum wavelength of Lyman series?

⇒λ=3R4.

How is the emission of light related to the Bohr model?

What is E in Bohr radius formula?

What is the Bohr radius value?

How do you find the radius of an electron?

Use the formula 𝑟_𝑛 = 𝑎₀ 𝑛², where 𝑟_𝑛 is the orbital radius of an electron in energy level 𝑛 of a hydrogen atom and 𝑎₀ is the Bohr radius, to calculate the orbital radius of an electron that is in energy level 𝑛 = 3 of a hydrogen atom. Use a value of 5.29 × 10⁻¹¹ m for the Bohr radius.

What is the shortest wavelength in Paschen?

For the Paschen series, n1= 3, 4, 5…. Therefore, 8.21×10−7m is the shortest wavelength in the Paschen series of spectral lines.

What is shortest and longest wavelength of Paschen series?

Solution

• Calculation:
• ∴ λL = 18750 Å
• The longest wavelength in the Paschen series is 18750 Å.

What is the shortest Paschen wavelength?

Therefore, 8.21×10−7m is the shortest wavelength in the Paschen series of spectral lines.

What is minimum wavelength of Lyman series?

. The longest and the shortest wavelengths of the Lyman series are 121.6nm and 91.2nm respectively. . The longest and the shortest wavelengths of the Balmer series are 656.3nm and 364.8nm respectively.

What can be the maximum emitted frequency in Lyman series?

Assertion (A):In Lyman series of H-spectra, the maximum wavelength of lines is 121.56 nm.