- Policy Issues
- For the Media
- In the Classroom
- Know Nuclear
- About the Center
We all know science is all around us. But what does nuclear have to do with that? For those who have been out of school for awhile – Welcome back to the basics. For the new students – Welcome to Nuclear 101.
Atoms are made up of protons and neutrons, collectively called nucleons, surrounded by electrons.
Things you need to know:
The symbol is used for the nucleus of an element that has the chemical symbol X, a mass number A, and atomic number Z.
The symbol is used for a particular isotope. If A = 14 and Z = 6,
- How many protons does the isotope have in its nucleus?
- How many neutrons does the isotope have in its nucleus?
- What is the element X?
- The atomic number Z = 6 so the isotope has 6 protons in its nucleus.
- The number of neutrons in the nucleus of the isotope is A-Z = 14-6 = 8.
- The element that has an atomic number 6 is carbon.
Center for Nuclear Science and Technology Information of the American Nuclear Society
© Copyright 2014