if we assume only gravitational attraction between proton and electron in hydrogen atom and the Bohr quantizaton rule to be followed, then the expression for the ground state energy of the atom will be (the mass of proton is M and that of electron is m.)

If we assume only gravitational attraction between protect and electron in hydrogen atom and the Bohr's quantization rule kto be allowed , then the expression for the ground state energy of the atom will be (the mass of proton is M and that of electron is m )

The speed of an electron in the orbit of hydrogen atom in the ground state is

Hydrogen atom will be in its ground state , if its electrons is in

Calculate the energy of the electron in the ground state of the hydrogen atom.

Calculate the energy required to excite an electron in hydrogen atom from the ground state to the next higher state, if the ionsation energy for the hydrogen atom is 13.6 eV .

The energy of an electron in the nth Bohr orbit of hydrogen atom is

An electron is orbiting is 5th Bohr orbit. Calculate ionisation energy for this atom. If the ground state energy is -13*6 eV.