Question

What is the electronic configuration for Oganesson, Atomic number is $118$?

Answer 1

Chemical element has a definite atomic number. The atomic number gives the number of protons which is equal to the number of electrons. The notation of the electron in an orbital for an element is known as the electronic configuration of that element. Oganesson is an element with atomic number $118$

Complete answer:
Periodic table is the representation of chemical elements arranged in the increasing order of atomic numbers. There are a total of $118$ elements arranged in the vertical columns and horizontal rows. The vertical columns were known as groups and the horizontal rows were known as periods. The periodic table was divided into four blocks namely s, p, d, and f blocks.
Oganesson is the synthetic element that can be prepared from the bombarding of californium elements and calcium elements. Thus, it is a synthetic element that can be prepared by humans and is known as a man-made element.
As the atomic number of Oganesson is $118$ the number of electrons is also $118$ . Electronic configuration can also be written by writing the symbol of the previous inert gas element and the remaining electrons.
The electronic configuration of Oganesson is $\left[ {Rn} \right]5{f^{14}}6{d^{10}}7{s^2}7{p^6}$

Note:
Radon is an inert gas element with atomic number $86$ , the number of electrons in radon is $86$ . As the number of electrons in Oganesson are $118$ , the $86$ electrons can be represented by $Rn$ and the remaining electrons can be represented in orbitals based on the energy of orbitals.