Question

Calculate the radius of Bohr's fifth orbit for hydrogen atom.

What is the energy in joules, required to shift the electron of the hydrogen atom from the first Bohr orbit to the fifth Bohr orbit and what is the wavelength of the light emitted when the electron returns to the ground state? The ground state electron energy is –2.18 × 10–11 ergs.

The electron energy in hydrogen atom is given by En = (–2.18 × 10–18 )/n2 J. Calculate the energy required to remove an electron completely from the n = 2 orbit. What is the longest wavelength of light in cm that can be used to cause this transition?

Calculate the energy required for the process He+ (g) → He2+ (g) + e– The ionization energy for the H atom in the ground state is 2.18 × 10–18 J atom–1