R= 7.1x10-15 m Learning Goal: To understand the notation and basic quantities involved in nuclear physics. Submit Previous Answers Nuclear physics borrows the symbols for elements from chemistry. However, knowing which element we are dealing with only tells us one V Correct of the numbers important to nuclear physics. When referring to a specific nucleus, we use the following notation: 56 Fe. The superscript, 56 in this case, denotes the total number of nucleons (protons and neutrons) in the nucleus. This is called the nucleon Part F number and is given the symbol A. The subscript, 26 in this case, is the number of protons in the nucleus. This is called the atomic number and is given the symbol Z . An atom's atomic number determines Assuming that each nucleus is roughly spherical and that its mass is roughly equal to A (in atomic mass units u), what is the density p of a nucleus with nucleon which element the atom is, in this case Fe (iron). Another important number A? number characterizing an atom is the neutron number NV. Since A is the total number of nucleons in the nucleus, the neutron number may Express your answer in terms of A, Ro, and 7. be found from the equation A = Z + N. Solving for NV gives > View Available Hint(s) N = A - Z. Nuclei with the same atomic number but different neutron numbers are called isotopes. Isotopes are often written in a form such as "iron-56." AEd ? Xb Vx VX IX X . 10n X 3A p = u/m3 AnR 3