Atomic physics questions | form six Physics

Why hydrogen spectrum contains a larger number of spectral lines although its atom has only one electron?

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Figure 2 shows the energy level diagram of the hydrogen atom.

1. Calculate the frequency and te wavelength of the radiation emitted as a result of an electron transition from n=4 to when an electron is in its ground state.
2. What is the energy at the level where n=5?

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Use the Rydberg constant , R_H=1.0974x10⁷m^-1 to calculate the shortest wavelength of the Balmer series.

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Use the Bohr`s theory for hydrogen atom to determine the :

1. Radius of the dirst orbit of the hydrogen atom in units
2. Velocity of the electron in the forst orbit.

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What is ionization potential of an atom?

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