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Americium (Am)
Atomic number: 95 · Category: actinide · Group 3 · Period 7 · Phase: Solid
Americium is a radioactive transuranic chemical element with symbol Am and atomic number 95. This member of the actinide series is located in the periodic table under the lanthanide element europium, and thus by analogy was named after the Americas. Americium was first produced in 1944 by the group of Glenn T.Seaborg from Berkeley, California, at the metallurgical laboratory of University of Chicago.
Atomic mass: 243
Density: 12
Melting point: 1449 K
Boiling point: 2880 K
Appearance: silvery white
Source: Wikipedia
Block: f
Molar heat: 62.7
CPK color:#545cf2
Electronic structure
Electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f7
Configuration (semantic): [Rn] 5f7 7s2
Shells: 2, 8, 18, 32, 25, 8, 2
Electronegativity (Pauling): 1.13
Electron affinity: 9.93
Ionization energies: 578
Periodic position
Group: 3
Period: 7
xpos: 9
ypos: 10
Spectral/Bohr images
Image
3D Model