The configuration of the two ions is the same noble gas, krypton (Kr).
The noble gases are a group of chemical elements with comparable qualities; under normal conditions, they are all odorless, colorless, monatomic gases with very minimal chemical reactivity. Historically, they were also known as inert gases and aerogens. The six naturally occurring noble gases are radioactive radon, neon, argon, krypton, xenon, and helium (He, Ne, Ar, Kr, Xe) (Rn).
Oganesson (Og) is a highly radioactive element that has been created synthetically. It is predicted to either be another noble gas or, due to relativistic effects, to deviate from the norm and be reactive.
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