Element 95 of Periodic table is
Americium with atomic number 95,
atomic weight 243.
Americium, symbol Am, has a
Simple Hexagonal structure and Silver color.
Americium is a actinide element.
Know everything about Americium Facts, Physical Properties, Chemical
Properties, Electronic configuration, Atomic and Crystal Structure.
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.
Read key information and facts about element Americium
Explore our interactive periodic table
Periodic table is arranged by atomic number, number of protons in the nucleus which is same as number of
The atomic number increases from left to right. Periodic table starts at top left ( Atomic number 1) and
ends at bottom right (atomic number 118). Therefore you can directly look for atomic number
95 to find Americium on periodic table.
Another way to read periodic table and locate an element is by using group number (column)
and period number (row). To locate Americium on periodic
table look for cross section of group N/A and period
7 in the modern periodic table.
Interactive Periodic Table to Understand
and Learn Cool Trends
The element Americium was discovered by Glenn T. Seaborg in year
1944 in United States
derived its name from The Americas, as the element was first synthesized on the continent, by analogy with europium
The table below shows the abundance of Americium in Universe, Sun, Meteorites,
Earth's Crust, Oceans and Human Body.
The solid state structure of Americium is Simple Hexagonal.
The Crystal structure can be described in terms of its unit Cell. The unit Cells repeats itself in
dimensional space to form the structure.
The unit cell is represented in terms of its lattice parameters, which are the lengths of the cell
Lattice Constants (a, b and c)
and the angles between them Lattice Angles (alpha, beta and gamma).
The positions of the atoms inside the unit cell are described by the set of atomic positions (
xi, yi, zi) measured from a reference lattice point.
The symmetry properties of the crystal are described by the concept of space groups. All possible
symmetric arrangements of particles in three-dimensional space are described by the 230 space groups
(219 distinct types, or 230 if chiral copies are considered distinct.
Americium atoms have 95 electrons and
the electronic shell structure is [2, 8, 18, 32, 25, 8, 2] with Atomic Term Symbol (Quantum Numbers) 8S7/2.
Shell Structure of Americium - Electrons per energy
The ground state electronic configuration of Neutral Americium atom is
[Rn] 5f7 7s2.
The portion of Americium configuration that is equivalent to the noble gas of
the preceding period, is abbreviated as [Rn]. For atoms with many electrons, this
notation can become lengthy and so an abbreviated notation is used.This is important as it is
the Valence electrons 5f7 7s2, electrons in
the outermost shell that determine the chemical properties of the element.
Complete ground state electronic configuration for the Americium atom, Unabbreviated electronic configuration
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 5f7 7s2
Americium atomic radius is 175 pm, while it's covalent radius is N/A.
The electron affinity of Americium is N/A
Refer to table below for Ionization energies of Americium
Refer to below table for Americium Physical Properties
Americium is N/A of electricity. Refer to
below for the Electrical properties of Americium
Refer to table below for Thermal properties of Americium
Isotopes of rhodium. Naturally occurring Americium has
1 stable isotope -
List of unique identifiers to search the element in various chemical registry databases