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Chemistry Regents January 2008 - Question 32 PDF Print E-mail
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Written by The Chemistry Wizard   

chemjan08q (32)

(1) is the correct answer.

An isotope is an element with the same number of protons (atomic number) but a different number of neutrons.  You will need to remember that the top number refers to the number of neutrons and the lower number refers to the atomic number, or number of protons.  In this case, choice 1 is the only one that fulfills the definition for an isotope.

Last Updated on Friday, 13 March 2009 10:17
 

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