polonium-210

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The impeachment trial of Pres. Andrew Johnson, illustration from Frank Leslie's Illustrated Newspaper, March 28, 1868.

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King Cobra snake in Malaysia. (reptile)

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Saint Lucia Day. Young girl wears Lucia crown (tinsel halo) with candles. Holds Saint Lucia Day currant laced saffron buns (lussekatter or Lucia's cats). Observed December 13 honor virgin martyr Santa Lucia (St. Lucy). Luciadagen, Christmas, Sweden

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Srinivasa Ramanujan, Indian mathematician and autodidact.

6 Interesting Facts about Srinivasa Ramanujan

polonium-210

chemical isotope

Learn about this topic in these articles:

alpha decay

In alpha decay
Thus polonium-210 (mass number 210 and atomic number 84, i.e., a nucleus with 84 protons) decays by alpha emission to lead-206 (atomic number 82).
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death of Arafat

In Yasser Arafat: From agreement to the second intifada of Yasser Arafat
…had discovered elevated levels of polonium-210 on some of Arafat’s clothes and personal belongings. French prosecutors launched a murder investigation later that year in response to a request by Arafat’s widow. In November 2012 Arafat’s remains were exhumed so that teams of Swiss, Russian, and French experts could test for…
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polonium

In polonium
…common natural isotope of polonium, polonium-210, has a half-life of 138.4 days.
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