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Chapter 2. Chemistry of Life. Three Subatomic Particles:. Atomic Number. The number of protons in an atom Unique for every element. Atoms are always electrically neutral. This means that protons always equal the electron. Atomic Structure Overview | Cell Biology | Biochemistry. Silicon
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Chapter 2 Chemistry of Life
Atomic Number • The number of protons in an atom • Unique for every element
Atoms are always electrically neutral. This means that protons always equal the electron.Atomic Structure Overview | Cell Biology | Biochemistry
Silicon Nitrogen Zinc 14 p & 14 e 7 p & 7 e 30 p & 30 e How many protons & electrons are in the following atoms?
Mass Number • The number of protons and neutrons in the nucleus • Mass Number – Atomic Number = Neutrons
Potassium Argon Tin 20 n 22 n 69 n How Many Neutrons are in: