I WILL GIVE BRAINLYEST 40+ POINTS
A is correct because the atomic number determines that there are two protons and electrons. The atomic mass minus the atomic number determines that there are two neutrons.
B is correct because the atomic number determines that there are two protons and neutrons. The atomic mass determines that there are four electrons in the electron shell.
D is correct because the atomic number determines that there are two protons and electrons. The atomic mass minus the atomic number determines the number of neutrons.
C is correct because the atomic number determines that there are two protons and electrons. The atomic mass determines that there are four neutrons in the nucleus.
