Question

What are the electron configuration, orbital diagram, and noble gas notation of potassium?

Answer 1

Electron configuration :

• An element's electron configuration defines how electrons are dispersed in its atomic orbitals.

Orbital diagram :

• An orbital diagram, also known as an orbital filling diagram, is a style of notation that depicts the electron distribution and electron spin within orbitals of an atom.
• The orbital diagram depicts the energy rise from one energy sublevel to the next.

Noble gas notation:

• An atom's noble gas configuration consists of the elemental symbol of the previous noble gas, followed by the arrangement of the remaining electrons.

Potassium

• The atomic number of potassium is $19$.
• This indicates that the nucleus of potassium contains $19$ protons. The number of protons in a neutral atom equals the number of electrons.

• As a result, the electron configuration of potassium will have $19$ electrons.
• Potassium's complete electron configuration is $1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{6}3{\mathrm{s}}^{2}3{\mathrm{p}}^{6}4{\mathrm{s}}^1$.
• 
• The noble gas symbol is $\left[\mathrm{Ar}\right]4{\mathrm{s}}^1$.