Elementary PuzzleThese brain teasers rely on your ability to recognize groups of common attributes. For each of these puzzles you'll need to figure out why the words or letters are grouped as they are. Sometimes you will be asked to pick the odd-one-out or to place a new word into the correct group.
Which one of the following items does not belong?
Ba, Be, Cd, Cs, Cr, Ge, He, Mo, Ra.
HintLook at the title.
AnswerMo = Molybdenum definitely does not belong as all of the others end in "ium".
The others are Ba = Barium, Be = Beryllium, Cd = Cadmium, Cs = Cesium, Cr = Chromium, Ge = Germanium, He = Helium and Ra = Radium.
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