Yes! 44 mins left. Which of these elements has a smaller atomic #? 1=Cobalt 2=Cerium 3=Beryllium 4=Hint 5= Skip Reply 1, 2 or 3 for Free 4 or 5 cost $1

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Beryllium has the smaller atomic #. Atomic #4.

Expert answered|debnjerry|Points 20286|

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Asked 9/22/2011 2:10:25 PM

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