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Chemistry | Chapter 3 - Atomic Structure - Coggle Diagram
Chemistry | Chapter 3 - Atomic Structure
Nucleus
Protons
Relative mass: 1
Relative charge: +1
Identifies element
Shown by proton (atomic) number
Neutrons
Keep the nucleus together
Relative mass: 1
Relative charge: 0
Shown by nucleon mass - proton number
Electron Shells
Electrons
Relative mass: 1/1840 or negligible
Relative charge: -1
Same number as protons
Electronic configuration
Shows number of electrons in each shell
Innermost shell has a maximum of 2 electrons
Following shells have a maximum of 8 electrons
Ions and Isotopes
Ions
Gains or loses electron(s) but number of protons and neutrons remain the same
Represented using charge numbers
Isotopes
Different number of neutrons but proton number remains the same
Relative nucleon (mass) number [Ar] =
