Am
Americium Symbol (Am)
Americium is element 95 of the periodic table. Copy its symbol Am and see its atomic weight, electron configuration and physical properties.
What does Am mean?
Am is the chemical symbol for americium, element number 95 in the periodic table. Americium is an actinide in the f-block, period 7. It is a solid at room temperature and was discovered in 1944.
Codes and properties
| Chemical symbol | Am |
|---|---|
| Atomic number (Z) | 95 |
| Mass number (no standard atomic weight) | [243] |
| Group / period | f-block / 7 |
| Element category | actinide |
| Electron configuration | [Rn]7s² 5f⁷ |
| State at 20 °C | Solid |
| Oxidation states | +6, +5, +4, +3 |
| Electronegativity (Pauling) | 1.3 |
| Melting point | 1449 K (1175.85 °C) |
| Boiling point | 2284 K (2010.85 °C) |
| Density | 13.69 g/cm³ |
| Discovered | 1944 |
How to type Am
- Plain text: type
Am— element symbols are ordinary Latin letters, with the first letter capitalised and the second lowercase. - Subscripts in formulas: use Unicode subscript digits (₀₁₂₃₄₅₆₇₈₉) for formulas such as H₂O — copy them from the chemistry keyboard.
- LaTeX: write
\mathrm{Am}in math mode, or use the mhchem package:\ce{Am}. - HTML:
Am; for subscripts use<sub>, e.g.H<sub>2</sub>O.
Frequently asked questions
What is the chemical symbol for americium?
The chemical symbol for americium is Am.
What is the atomic number of americium?
Americium has atomic number 95, meaning each atom has 95 protons.
What is the electron configuration of americium?
The ground-state electron configuration of americium is [Rn]7s² 5f⁷.
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Reference: Americium on PubChem (NIH)