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110
Room of the Elements · No. 110

Darmstadtium (Ds): what kind of element is it?

日本語

In short

Darmstadtium is element number 110, with the symbol Ds. Its name comes from the German city of Darmstadt.
Atomic number 110(281)
DsDarmstadtium (dāmusutachiumu)
Symbol
Ds
Atomic weight
(281)
Place in the table
Period 7 · Group 10

The number in parentheses is not an atomic weight. It is the mass number of one radioactive isotope of the element.

Atomic weight from the Chemical Society of Japan, “Table of Standard Atomic Weights with Four Significant Figures (2026)”.

A German city’s name

Darmstadtium was found in Germany in 1995, made by smashing nickel (number 28) into lead (number 82). The discovery was confirmed in 2001, and the name was decided in 2003.

The German group used lead or bismuth as the target and changed the metal they fired at it, from chromium to iron, nickel and zinc, to make elements 107 to 112.

Where it sits on the table

Darmstadtium is in the seventh row of Group 10, at the bottom of the column with nickel, palladium and platinum.

Think about it

There is no single right answer. Talking it over with someone at home is a good way to learn.

Did you know? — Change the lead target (number 82) to bismuth (number 83), fire the same nickel, and you get the next element, 111, roentgenium.
Next steps
About this page
Symbol and atomic weight: Chemical Society of Japan, “Table of Standard Atomic Weights (2026)” and “Table of Atomic Weights with Four Significant Figures (2026)”. Origin of the name, year of discovery, year of naming and how it was made: Wakabayashi, “Chemistry of Superheavy Elements: The Birth of Nihonium Nh and Its Surroundings,” Kagaku to Kyōiku 65(3), 2017 (Chemical Society of Japan). All sources are in Japanese.
Written by CCN CO., LTD.
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