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Q: Modern Physical Science ( Answered,   0 Comments )
Subject: Modern Physical Science
Category: Science > Physics
Asked by: neener-ga
List Price: $2.00
Posted: 30 Jul 2002 18:31 PDT
Expires: 29 Aug 2002 18:31 PDT
Question ID: 47143
Substracting the atomic number of an atom from its mass number results
in the number of
a. neutrons
b. protons
c. electrons
d  energy levels
Subject: Re: Modern Physical Science
Answered By: blader-ga on 30 Jul 2002 18:51 PDT
Dear neener:

Thank you for your question. 

The atomic number is the number of protons in the atom.

The mass number is the number of protons in the atom, plus the number of neutrons.

This should be enough information to answer your question. 

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I hope this helps!

Best Regards,
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