Valency of Darmstadtium (Ds)
The valency of Darmstadtium is 2 — it has 1 valence electron, and it loses them to complete its outer shell.
Teachers call it "one fact, fully handled" — exactly what this page does for Darmstadtium. 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 Darmstadtium page is one click away.
Counting the valence electrons
From the configuration [Rn] 5f¹⁴ 6d⁹ 7s¹, Darmstadtium's outermost shell carries 1 electron. For a d-block element the nearby inner "d" subshell can also lend electrons, which is where variable valency comes from.
Position check: Darmstadtium belongs to group 10 of the periodic table, period 7.
Valency vs valence electrons
Valence electrons are what you count (1 for Darmstadtium); 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 Darmstadtium from its group?
Darmstadtium sits in group 10; for this transition group the safe exam answer is its common valency, 2.
Why does Darmstadtium show a fixed valency?
Darmstadtium has 1 valence electron and reaches a complete outer shell in one consistent way, so its valency stays fixed at 2.