Answer: ISOTOPES
ISOTOPES is a crossword puzzle answer that we have spotted 23 times.
Referring Clues:
- Some are radioactive
- Deuterium and tritium, to hydrogen
- Uranium 235 and uranium 238
- Carbon 14 and uranium 235
- Cobalt-60 and iodine-131
- Carbon 14 and strontium 90
- Springfield's minor league team on "The Simpsons"
- Dating material
- Deuterium and tritium
- Elemental relatives
- Atoms with the same number of protons
- They may be radioactive
- Uranium has many
- Chemist's relatives?
- Springfield's minor-league team on "The Simpsons"
- U-235 and U-238
- Carbon 12 and carbon 14
- Chemical variants
- Uranium 238 and strontium 90
- Elemental variants
- Elemental forms used in carbon dating
- Carbon-12 and carbon-14
- U-235 and C-14
Last Seen In:
- LA Times - October 27, 2019
- USA Today - September 16, 2019
- King Syndicate - Eugene Sheffer - August 21, 2017
- LA Times - January 18, 2017
- Netword - December 15, 2016
- New York Times - August 14, 2016
- New York Times - May 11, 2016
- Washington Post - January 19, 2015
- Washington Post - August 10, 2014
- LA Times - November 04, 2012
- Washington Post - September 26, 2012
- King Syndicate - Eugene Sheffer - September 04, 2012
- New York Times - November 28, 2011
- New York Times - June 03, 2011
- New York Times - May 05, 2010
- Netword - February 27, 2009
- Universal - April 20, 2008
- Netword - April 19, 2008
- New York Sun - February 25, 2008
- USA Today - April 25, 2006
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