Americium: the essentials

The lustre of freshly prepared americium metal is whiter and more silvery than plutonium or neptunium prepared in the same manner. Americium is a component of the smoke detector above.

Americium appears to be more malleable than uranium or neptunium and americium tarnishes slowly in dry air at room temperature. Americium is a radioactive rare earth metal which must be handled with care to avoid contact, since it is a heavy α and γ emitter. It is named after America. The α activity of 241Am is about three times that of radium. Americium is available to qualified users in the UK and in the USA.

Table: basic information about and classifications of americium.

Americium: historical information

Americium was discovered by Glenn Seaborg, Ralph James., L. Morgan, Albert Ghiorso at 1944 in USA. Origin of name: from the English word "America".

Americium was was identified by Seaborg and others in 1944 as the result of successive neutron capture reactions by plutonium isotopes in a nuclear reactor.

Americium: physical properties

 Read more » »

Americium: orbital properties

 Read more » »

Isolation

Isolation: coming soon!

PeriodicTablePen Shop

PeriodicTablePen now has a PeriodicTablePen shop at which you can buy periodic table poster pens, scroll keyrings, elements pens, and more.

Periodic table pens Periodic table Pens of Chemical elements Chemical Elements Pens Periodic Table Scroll Keyrings Periodic Table Scroll

americium atomic number