Polonium

Electron shell diagram of polonium

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Polonium, Element 84, is an incredibly radioactive and toxic element. It has 42 isotopes, all of which are radioactive and unstable. Due to the short half-life of all its isotopes,^{[note 1]} it is rarely found in nature. It was first discovered in 1898 by Marie and Pierre Curie and is named after Marie's home country of Poland. During the Cold War, it was used to heat Soviet satellites but is now just used to assassinate ex-FSB agents. Polonium is also present in tobacco smoke.^[1]

Polonium-210[edit]

Polonium-210 (²¹⁰Po. Historically, Radium F) is an isotope of polonium and has the longest half-life of all naturally occurring isotopes, being about 138.376 days. Due to its radioactivity, it's extremely toxic to humans, having been used to poison Alexander Litvinenko in 2006^{(see above)} and possibly having also been used to assassinate Yasser Arafat.^[2] It was originally intended to be used as a neutron initiator in nuclear weapons, although later on concerns for the safety of workers handling it caused extensive studies to be taken up on its health effects.

Polonium halos[edit]

Notes[edit]

References[edit]