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Warm Up 4/14 How many protons and neutrons would an H+ ion have?
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Protons: 79 Electrons: 79 Neutrons: 118 Mass # : 197
Protons, Neutrons, Electrons
The Periodic Table Beyond protons, neutrons, and electrons
Number of Protons = Number of Electrons Number of Protons = Atomic Number Atomic Mass = Protons + Neutrons
Atoms are the smallest form of matter Nucleus: ◦ Protons (positive) ◦ Neutrons (neutral) ◦ Protons & neutrons make up most of the atom’s mass Energy
Atoms contain particles called protons, neutrons, and electrons
Atomic Number Number of Protons. Mass Number Number of Protons + Neutrons
Atoms contain particles called protons, neutrons, and electrons. Protons and electrons have electric charge, and neutrons have no electric charge. Positive