What is the maximum number of electrons that an orbital can have?

. The maximum number of electrons that can be accommodated in the nth level is :

The maximum number of electrons that can be accommodated in M Shell is

Write the formula used to determine the maximum numbers of electrons which a shell in an atom can accommodate.

(a) Using Bohr's second postulate of quantization of orbital angular momentum, show that the circumference of the electron in the nth orbital state in hydrogen atom is n times the de-Broglie wavelength associated with it. (b) The electron in hydrogen atom is initially in the third excited state. What is the maximum number of spectral lines which can be emitted when it finally moves to the ground state ?

The maximum number of zeroes that a polynomial of degree 3 can have is :