Which of the following statements are true? Select all that apply. Check All That Apply All isotopes of carbon (C) have the same number of protons. All isotopes of carbon (C) have the same number of protons. An atom with six protons in its nucleus will always have six neutrons in its nucleus. An atom with six protons in its nucleus will always have six neutrons in its nucleus. An atom with a neutral charge has an equal number of protons and electrons. An atom with a neutral charge has an equal number of protons and electrons. The mass number is the total number of electrons and protons in an atom. The mass number is the total number of electrons and protons in an atom.