Chemical elements by atomic number
A Dartle category: each answer is worth its atomic number. Name up to 3 answers that add up to exactly 100. New to the game? Read how to play.
When it was played
- Puzzle #19, October 17, 2026 · replay in the archive
The numbers
- 118 answers count.
- 834 different ways to hit exactly 100, the shortest in 1 dart.
- 18 answers are worth more than 100 on their own, an instant bust.
How it's counted
- Element names follow IUPAC; common spelling variants (e.g. Aluminium) are accepted.
Source
PubChem Periodic Table (IUPAC names and numbers), as of September 27, 2026.
Every answer
Alphabetical. Their values stay a secret, so the puzzle is still worth replaying.
Actinium · Aluminum · Americium · Antimony · Argon · Arsenic · Astatine · Barium · Berkelium · Beryllium · Bismuth · Bohrium · Boron · Bromine · Cadmium · Calcium · Californium · Carbon · Cerium · Cesium · Chlorine · Chromium · Cobalt · Copernicium · Copper · Curium · Darmstadtium · Dubnium · Dysprosium · Einsteinium · Erbium · Europium · Fermium · Flerovium · Fluorine · Francium · Gadolinium · Gallium · Germanium · Gold · Hafnium · Hassium · Helium · Holmium · Hydrogen · Indium · Iodine · Iridium · Iron · Krypton · Lanthanum · Lawrencium · Lead · Lithium · Livermorium · Lutetium · Magnesium · Manganese · Meitnerium · Mendelevium · Mercury · Molybdenum · Moscovium · Neodymium · Neon · Neptunium · Nickel · Nihonium · Niobium · Nitrogen · Nobelium · Oganesson · Osmium · Oxygen · Palladium · Phosphorus · Platinum · Plutonium · Polonium · Potassium · Praseodymium · Promethium · Protactinium · Radium · Radon · Rhenium · Rhodium · Roentgenium · Rubidium · Ruthenium · Rutherfordium · Samarium · Scandium · Seaborgium · Selenium · Silicon · Silver · Sodium · Strontium · Sulfur · Tantalum · Technetium · Tellurium · Tennessine · Terbium · Thallium · Thorium · Thulium · Tin · Titanium · Tungsten · Uranium · Vanadium · Xenon · Ytterbium · Yttrium · Zinc · Zirconium