95
Am
Americium
Americium
Americium (Am)
Actinides · Solid · Period 7 · Group 3
Element Properties
- Atomic Number
- 95
- Symbol
- Am
- Atomic Mass
- 243.0614
- Category
- Actinides
- Standard State
- Solid
- Period
- 7
- Group
- 3
- Electronegativity
- 1.3
- Atomic Radius
- 244
- Ionization Energy
- 5.99
- Electron Affinity
- —
- Oxidation States
- +6, +5, +4, +3
- Melting Point
- 1449 K (1175.85 °C)
- Boiling Point
- 2284 K (2010.85 °C)
- Density
- 13.69
- Electron Configuration
- [Rn]7s2 5f7
- Year Discovered
- 1944
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Frequently asked questions
What is the atomic number of Americium?
The atomic number of Americium is 95, which equals the number of protons in its nucleus.
What is the atomic mass of Americium?
The atomic mass of Americium is approximately 243.0614 u (one twelfth of the mass of a carbon-12 atom).
What is the electron configuration of Americium?
The electron configuration of Americium is [Rn]7s2 5f7.
Where is Americium in the periodic table?
Americium is located in period 7, group 3.
When was Americium discovered?
Americium was discovered in 1944.
Related elements
Same group
21
Sc
Scandium
44.956
39
Y
Yttrium
88.906
57
La
Lanthanum
138.905
58
Ce
Cerium
140.116
59
Pr
Praseodymium
140.908
60
Nd
Neodymium
144.24