95Am243
Americium
Actinide · element 95 · f-block (shown below the main table)
Quick facts
| Symbol | Am |
|---|---|
| Atomic number | 95 |
| Relative atomic mass | 243 |
| Category | Actinide |
| Position | f-block (shown below the main table) |
| State at 20 °C | Solid |
| Melting point | 1,176 °C |
| Boiling point | 2,011 °C |
| Density | 13.67 g/cm³ |
| Electronegativity | 1.13 |
| Electron configuration | [Rn] 5f7 7s2 |
About Americium
Americium has the symbol Am and atomic number 95, which means every americium atom has 95 protons in its nucleus and, in a neutral atom, 95 electrons. At room temperature it is a solid.
Actinides are the second row of the f-block. They are all radioactive, and only a few (like uranium and thorium) occur naturally in large amounts.
It melts at 1,176 °C and boils at 2,011 °C.
Explore it
See where americium sits, and drag the temperature slider to watch it melt and boil, on the interactive periodic table. Practise with quizzes on OmniEx.