Homework Help: Science

Posted by Sara Pleaseee on Monday, October 31, 2011 at 10:46pm.

Different elements have different kinds of atoms. How can you tell an atom of one element from an atom of another?

A. the number of electrons
B. the number of neutrons
C. the number of nuclei
D. the number of protons

Science - drwls, Monday, October 31, 2011 at 11:36pm
A and D.
If the number of electrons and protons are not equal it is an ion, not an atom.

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