You can access this free training by: 1  Go to https://pcau.enspark.com. 2  Complete Registration. Parents must select I am a Parent of a Student. 3  Click the Registration Button. 4  Click Launch Course. 5  Complete the one-hour training. 6  There will be a Certificate of Completion issued at the end of the course.
# of neutrons = Mass Number - Number of Protons. To be able to apply this formula, refer to the atomic number and atomic weight of the elements. These two are listed in the Periodic Table of Elements. Take note that atomic number refers to the number of protons in an atom of an element.
Atomic Number The number of protons always equals the number of electrons in an atom, and that number is equal to the atomic number. For instance, carbon has an atomic number of six and therefore has six protons and six electrons. The Atomic Mass is the weight of an atom and is determined by the number of neutrons and protons that are present in the nucleus. Hope that helps!!!