Homework Help: Chemistry

Posted by Monique on Wednesday, August 31, 2011 at 3:12pm.

What are the atomic number (z) mass number (a) and symbols of the carbon isotope with 7 neutrons.

What is and how do I get the mass number?

Chemistry - bobpursley, Wednesday, August 31, 2011 at 3:22pm
Mass number is the sum of neutrons and protons. Carbon has six protons, so the mass number here is six plus seven= 13

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