Sunday
April 20, 2014

Homework Help: Chemistry

Posted by Jean on Saturday, July 24, 2010 at 4:59am.

I would really appreciate help with the following, as I don't understand how to work it. Thank you in advance for explaining it to me.

The mass number (A) of a nuclide is equal to the number of --- blank --- in one of its nuclei. There are 4 answers to choose from: Protons, Neutrons, Protons+neutrons, or neutrons+electrons?

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