Valency of Rutherfordium (Rf)
The valency of Rutherfordium is 2 — it has 2 valence electrons, and it loses them to complete its outer shell.
Teachers call it "one fact, fully handled" — exactly what this page does for Rutherfordium. The answer sits at the top in bold; scroll for the working, the shell-by-shell breakdown and the two questions students ask most. Need the whole picture instead — history, characteristics, uses, exam questions? The full Rutherfordium page is one click away.
Counting the valence electrons
From the configuration [Rn] 5f^14 6d^2 7s^2, Rutherfordium's outermost shell carries 2 electrons. For a d-block element the nearby inner "d" subshell can also lend electrons, which is where variable valency comes from.
Position check: Rutherfordium belongs to group 4 of the periodic table, period 7.
Valency vs valence electrons
Valence electrons are what you count (2 for Rutherfordium); valency is what the atom will do to complete its outer shell (2 here). Keep the two words straight and half the periodic-table chapter writes itself.
Students also ask
How do I find the valency of Rutherfordium from its group?
Rutherfordium sits in group 4; for this transition group the safe exam answer is its common valency, 2.
Why does Rutherfordium show a fixed valency?
Rutherfordium has 2 valence electrons and reaches a complete outer shell in one consistent way, so its valency stays fixed at 2.