Radioactive elements Quiz

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Radioactive elements Quiz

by lood1234

Created Nov 9, 2009 in Science
Game Plays 160

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	wolfram:	Jan 12th, 2010 at 20:05 GMT		2 points
	Great quiz, although Bismuth should be on this list, at least as a bonus answer. In 2003, it was determined that the most stable isotope has a half life of a whopping 1.9*10^19 years

	awesomeguy2204:	Feb 4th, 2010 at 06:23 GMT		1 point
	I second wolframs comment. Good quiz, Bismuth must be added, in 2003, scientists proved Bismuth-209 undergoes alpha decay with an extremely long half-life. Its so long that its not considered radioacive, dispite this it is still technically radioactive.

	lood1234:	Feb 7th, 2010 at 03:25 GMT		2 points
	You guys are right. Even though Bismuth's most stable isotope's radioactivity is negligible, having a half life of billions of times the the length of the universe since the big bang, on technical terms, it is still radioactive.

	awesomeguy2204:	Apr 18th, 2010 at 00:18 GMT		1 point
	Could you also update ununbium with Copernicium?

	timjim:	Sep 30th, 2012 at 18:07 GMT		1 point
	Good Quiz. May I suggest adding some color, and instead of doing atomic numbers, maybe doing the type of element such as actinide, or transition metal?