The periodic table

An atom of an unknown element $X$ has the electronic configuration $2.8.18.3$ .

Explain how the electronic configuration of element $X$ is linked to its period in the periodic table.

[2]

An atom of an unknown element $X$ has the electronic configuration $2.8.18.3$ .

Explain how the electronic configuration of element $X$ is linked to its period in the periodic table.

[2]

The periodic table Questions