Question

Match the shell given in List-I with the value of $l$ given in List-II.

Answer 1

QUANTUM NUMBERS: The set of four integers required to define an electron completely in an atom are called quantum numbers. The first three have been derived from Schordinger wave equation.

Principle quantum number (n) :

It describes the size of the electron wave and the total energy of the electron. It has integral values 1,2,3,4......., etc, and is denoted by K, L, M, N.........., etc.

Azimuthal quantum number (l) :

It describes the shape of the electron cloud and the number of subshells in a shell. It can have values from 0 to ($n-1$),.

Magnetic quantum number (m) :

It describes the orientations of the subshells. It can have values from $-l\ to\ +l$ including zero, i.e., total ($2l + 1$) values.