Question

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

Answer 1

Understanding :
1) We will electronic configuration to find the arrangement of respective electron.

A) Principal Quantum Number(n)
=> It is denoted by 'n'
=> Each value of 'n' denotes one Shell.
Like :
n= 1. :K - shell
n= 2 : L - shell


B) Azimuthal Quantum Number (l)
=> This quantum Number denotes sub -shells denotes by "l'.
=> Each value of l denotes subshell.

C) Magnetic Quantum Number:(m)
=> I+ describes the orientations of orbitals with respect to set of co-ordinate axes
=> It has values from -l to +l.

D) Spin Quantum Nunber :
=> Denotes Spin of the electron.
=> It has values +1/2 or -1/2 which denotes clockwise or anti - clockwise spin.