State and explain pauli exclusion principle.

Explain briefly the time independent schrodinger wave equation?

Show that the circumference of the Bohr orbit for the hydrogen atom is an integral multiple of the de Broglie wave length associated with the electron revolving arround the nucleus.

The quantum mechanical treatment of the hydrogen atom gives the energy value:
\({ E }_{ n }=\frac { -13.6 }{ { n }_{ 2 } } ev{ \ atom }^{ -1 }\)
(i) use this expression to find ΔE between n = 3 and n = 4
(ii) Calculate the wavelength corresponding to the above transition.

Determine the values of all the four quantum numbers of the 8^th electron in O- atom and 15^th electron in Cl atom.