What is the name of the most radioactive isotope on the planet?

Rad 226
Uranus 235
Polonium 210
plutonium 244
210Po is ex­treme­ly toxic, with one mi­cro­gram being enough to kill the average adult (250,000 times more toxic than hydrogen cyanide by weight).210Po was used to kill Russian dis­si­dent and ex-FSB officer Alexan­der V. Litvi­nenko in 2006,

Answers distribution

Rad 226
Uranus 235
Polonium 210
plutonium 244
answers
flagPoland
14%
41%
19%
23%
357
flagUnknown
17%
39%
15%
27%
58

Gender

men16%
women19%
Rad 226
16%
19%
Uranus 235
40%
40%
Polonium 210
16%
19%
plutonium 244
26%
20%

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What is the name of the most radioactive isotope on the planet?
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Author: Tschuka
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