The nuclides (a nuclide is the general name for any nuclear species) $_6C^{12}$,$_{26}Fe^{56}$,and $_{92}U^{238}$ have $12$,$56$,and $238$ nucleons respectively in their nuclei. The total number of nucleons in a nucleus is equal to:

  • A
    The total number of neutrons in the nucleus
  • B
    The total number of neutrons in the atom
  • C
    The total number of protons in the nucleus
  • D
    The total number of protons and neutrons in the nucleus

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