Elements / 95
95Am[243]
Americium
Actinide · f-block · ring Q
Americium is element 95, an actinide. It is one of the actinides, which the spiral keeps in line on ring Q instead of exiling them to a strip below the table.
Properties
| Density | 12 g/cm³ | Terrain → |
|---|---|---|
| Melting point | 1,449 K · 1,176 °C | Terrain → |
| Boiling point | 2,880 K · 2,607 °C | Terrain → |
| Electronegativity | 1.13 | Terrain → |
| First ionization energy | 578 kJ/mol | Terrain → |
| Atomic weight | 243 u | Terrain → |
| Crustal abundance | Not measured | Terrain → |
| Discovered | 1944 | Terrain → |
Values from open reference data; see sources. "Terrain" opens that property as a 3D landscape across the whole spiral.
Two things you might not know
- Its discovery was leaked on Quiz Kids, a US children's radio show, five days before the official announcement in 1945.
- A tiny 0.29 microgram amount sits in the most common household smoke detector. Named for a pair of continents.
Checked against en.wikipedia.org.
Actinides
- Ac Actinium
- Th Thorium
- Pa Protactinium
- U Uranium
- Np Neptunium
- Pu Plutonium
- Am Americium
- Cm Curium
- Bk Berkelium
- Cf Californium
- Es Einsteinium
- Fm Fermium
- Md Mendelevium
- No Nobelium
Ring Q (period 7)
Play with Americium
Watch it fly into its seat, or raise the whole spiral into a landscape and see where it peaks.