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15 results for ISOTOPES

9 Shortz Era entries found. Click any date for context.
See the dictionary definition for ISOTOPES.

DateGridClueAuthor
Sun Aug 14, 20164DUranium 238 and strontium 90Ian Livengood
Wed May 11, 201636DDeuterium and tritiumPawel Fludzinski
Mon Nov 28, 20115DSpringfield's minor-league team on "The Simpsons"Andrea Carla Michaels
Fri Jun 3, 201163AChemist's relatives?Jeffrey Wechsler
Wed May 5, 201058ACarbon 14 and uranium 235Dan Schoenholz
Tue Mar 1, 200555ADeuterium and tritium, to hydrogenGilbert H. Ludwig
Mon Jul 10, 200010DSome are radioactiveGene Newman
Tue Jun 4, 199637DAtoms with the same number of protonsE. Early
Mon Sep 25, 199543DCarbon 14 and othersGregory E. Paul

1 result for ISOTOPES from Variety puzzles.

DateTypeGridClueAuthor
Jul 27, 2014acrosticURelatives of a fundamental sortEmily Cox & Henry Rathvon

5 results for ISOTOPES from older pre-Shortz puzzles.

DateGridClueAuthorEditor
Fri Dec 15, 198940DProtium and tritium, e.g.Jim PageMaleska
Thu Dec 13, 19734DU 235 et al.UnknownWeng
Fri Apr 3, 195341DElements having the same atomic number.Roberta MorseFarrar
Mon Jan 19, 195320ABasis of most chemical elements.George HendersonFarrar
Sun Aug 27, 195042DForms of elements having same atomic number.Harold T. BersFarrar