Question

What is the electronic configuration of an atom with atomic number $19$?

Answer 1

Electronic configuration: The arrangement of electrons into the orbitals of an atom using some fundamental principle is called its electronic configuration.

Electronic configuration of the element having Atomic number 19:

• The atomic number of an atom is equal to the number of electrons present in a neutral atom.
• So, the number of electrons are $19$.
• The name of an element with an atomic number $19$ is Potassium(K).
• So, the electronic configuration of an atom with an atomic number $19$ is $1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{6}3{\mathrm{s}}^{2}3{\mathrm{p}}^{6}4{\mathrm{s}}^1$.