Atomic Number

 The Number of Protons in the

Nucleus.

Cation

 Atom with a positive charge (more protons than electrons)

Anion

 Atom with a negative charge (more electrons than protons)

he number of Protons CAN or CAN NOT be changed?

 Can NOT (except in stars)

electrons

 are added as dots, starting on the

right, and move clockwise.

isotopes

 Change in the number of Neutrons

ions

 Change in the number of Electrons

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