Question

On the basis of the Pauli exclusion principle, the structure of the periodic table of the elements shows that there must be a fourth quantum number in addition to n,l and ${\mathbf{m}}_{\mathbf{l}}$. Explain.

Short answer

For the rows of periodic table, we have atoms twice the number of states that’s why shows that there must be a fourth quantum number in addition to n,l and ${\mathrm{m}}_{\mathrm{l}}$.

Step-by-step solution

Definition of metal

The term metal may be defined the elements have property of loss of electron.

Explain the reason

Every roe of the periodic table is for the shell in the atom, so the number of electrons is equal to the number of atoms in each row of the periodic table that can fill shell. Since the rows of periodic table, we have atoms twice the number of states that’s why shows that there must be a fourth quantum number in addition to n,l and ${\mathrm{m}}_{\mathrm{l}}$.

Hence, on the basis of the Pauli exclusion principle, the structure of the periodic table of the elements shows that there must be a fourth quantum number in addition to n,l and ${\mathrm{m}}_{\mathrm{l}}$.