What is the ratio of radii of the orbits corresponding to first excited state and ground state in a hydrogen atom?

What is the separation energy (in eV ) for Be^(3+) in the first excited state ?

State Bohr’s postulates for hydrogen atom.

What is overlapping of atomic orbitals?

Calculate the de Broglies wavelength associated with the electron revolving in the first excited state of hydrogen atom. The ground state energy of the hydrogen atom is -13.6 eV.

What is the angular momentum of an electron in ground state in hydrogen atom?

Estimate the ratio of the wavelength associated with the electron orbiting around the nucleus in the ground and first excited state of hydrogen atom.

What is the state of hybridisation of nitrogen atom in amines?

Explain the meaning of ground state and excited state of an atom?