Question

give the electron configuration for oganesson (og). you must use the noble gas configuration (the shortcut)

Explanation:

Step1: Identify noble - gas core

Oganesson (Og) has an atomic number of 118. The nearest noble gas with a lower atomic number is Radon (Rn) which has an atomic number of 86. So, we start with the noble - gas core [Rn].

Step2: Fill remaining electrons

After using [Rn], we need to account for 118 - 86=32 more electrons. We fill the sub - shells in the order of increasing energy: 7s²5f¹⁴6d¹⁰7p⁶.

Answer:

[Rn]7s²5f¹⁴6d¹⁰7p⁶