a) The quantum numbers of an electron are given below: `n "=4,1=0,m=0,s=+1/2` Predict in which shell, sub-shell and the orbital,the electron is present.What is the spin of electron?

The quantum numbers for the outer electrons of an atom are given by n = 2, l = 0, m = 0, s = +1//2

The total number of electrons present in the M-shell of sulphur is

The main energy shell in which the electron is present is given by

The number of electrons present in 'M' shell of silicon is

Why can 2p sub-shell accommodate more electrons than 2s sub-shell ?

The complete designation of the electrons in an atom is given with the help of four quantum numbers. They specify the shell, sub-shell and the orbital in a which a particular electron can be present. (i) Which quantum number describes the electron spin ? (ii) What is the significance of this quantum number ? (iii) If the two electrons repel each other and will not be in a position to remain in the same orbital.