5. the ______________ of an element is the total number of protons and neutrons in the______________. 6. the…

5. the ______________ of an element is the total number of protons and neutrons in the______________. 6. the mass number is used to calculate the number of ______________ in one atom of an element. in order to calculate the number of neutrons you must subtract the ______________ from the ______________.

5. the ______________ of an element is the total number of protons and neutrons in the______________. 6. the mass number is used to calculate the number of ______________ in one atom of an element. in order to calculate the number of neutrons you must subtract the ______________ from the ______________.

Answer

Brief Explanations:

  1. The mass number of an element is the sum of protons and neutrons in the nucleus of an atom.
  2. The mass number helps calculate neutrons. Neutrons = Mass number - Atomic number (number of protons).

Answer:

  1. mass number; nucleus
  2. neutrons; atomic number; mass number