Valency of Oganesson (Og)
The valency of Oganesson is 0 — its outer shell is already complete, so it neither loses nor gains electrons in ordinary reactions.
This is the fast lane: one page, one fact, zero digressions. Read the quick answer, check the table, and if your exam needs the full derivation, the sections below walk through it step by step — in Bangla and English, like every page here. Need the whole picture instead — history, characteristics, uses, exam questions? The full Oganesson page is one click away.
Counting the valence electrons
From the configuration [Rn] 5f^14 6d^10 7s^2 7p^6, Oganesson's outermost shell carries 8 electrons. These are the electrons shown as dots in electron-dot diagrams — the hands Oganesson uses to hold other atoms.
Position check: Oganesson belongs to group 18 of the periodic table, period 7.
Valency vs valence electrons
Valence electrons are what you count (8 for Oganesson); valency is what the atom will do to complete its outer shell (0 here). Keep the two words straight and half the periodic-table chapter writes itself.
Students also ask
How do I find the valency of Oganesson from its group?
Oganesson sits in group 18; groups 13–17 follow valency = group − 10, giving 8 (though Oganesson also shows 0).
Why does Oganesson show a fixed valency?
Oganesson has 8 valence electrons and reaches a complete outer shell in one consistent way, so its valency stays fixed at 0.