Question

Write the electronic configuration of Arsenic.

Answer 1

Arsenic is a chemical element with the atomic number 33 and the symbol As. Many crystals contain arsenic, which is normally found in association with sulphur and metals, but it can also be found as a pure elemental crystal. Arsenic is classified as a metalloid.

Complete answer:
Arsenic is a chemical element with the atomic number 33 and the symbol As. Many crystals contain arsenic, which is normally found in association with sulphur and metals, but it can also be found as a pure elemental crystal. Arsenic is classified as a metalloid.
Aufbau Principle:
The aufbau principle, also known as the aufbau law, states that when an atom or ion is in its ground state, electrons fill atomic orbitals of the lowest possible energy levels before moving on to higher levels. The 1s subshell, for example, is occupied before the 2s subshell.
Electronic configuration:
The distribution of electrons in an element's atomic orbitals is defined by its electron configuration. Atomic electron compositions follow a typical notation in which all electron-containing atomic subshells are arranged in a series (with the number of electrons they possess written in superscript).
Electronic configuration of Arsenic:
Electrons per Energy Level : 2,8,18,5
The electronic configuration of Arsenic is $1{s^2},2{s^2},2{p^2},3{s^2},3{p^2},4{s^2},3{d^{10}},4{p^3}$

Note:
The distribution of electrons in an element's atomic orbitals is defined by its electron configuration. Atomic electron compositions follow a typical notation in which all electron-containing atomic subshells are arranged in a series (with the number of electrons they possess written in superscript).