Changes

{{Element | name=Plutonium | symbol=Pu | anumber=94 | amass=244 amu | state=Solid | class=Metallic | cstructure=Monoclinic| color=silvery | date=1940 | discname=G.T.Seaborg, A.C.Wohl and J.W.Kennedy | origname=Named after the planet Pluto. | uses=Fuel for nuclear reactors, as well as nuclear wepaons. | obtained=Found in small doses in some [[uranium]] ores. Also manufactured by bombarding [[uranium]] with [[neutrons]]. }}

{{Element | name=Plutonium | symbol=Pu | anumber=94 | amass=244 amu | state=Solid | class=Metallic | cstructure=Monoclinic| color=silvery | date=1940 | discname=G.T.Seaborg, A.C.Wohl and J.W.Kennedy | origname=Named after the planetoid Pluto. | uses=Fuel for nuclear reactors, as well as nuclear wepaons. | obtained=Found in small doses in some [[uranium]] ores. Also manufactured by bombarding [[uranium]] with [[neutrons]]. }}

'''Plutonium''' is a [[silver]]y radioactive metal named after the planet [[Pluto]]. It is a [[man]]-made element discovered in 1940 after uranium-238 was bombarded with [[neutron]]s in a device called a [[cyclotron]]. Plutonium-238, as well as uranium-235 and uranium-233, are among the few materials whose [[atom]]s can be split (or "[[Nuclear fission|fissioned]]") to create a nuclear explosion, which releases massive amounts of [[energy]] almost instantaneously.

'''Plutonium''' is a [[silver]]y radioactive metal named after the planet [[Pluto]]. It is a [[man]]-made element discovered in 1940 after uranium-238 was bombarded with [[neutron]]s in a device called a [[cyclotron]]. Plutonium-238, as well as uranium-235 and uranium-233, are among the few materials whose [[atom]]s can be split (or "[[Nuclear fission|fissioned]]") to create a nuclear explosion, which releases massive amounts of [[energy]] almost instantaneously.