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(Trends (Electron Configurations (Examples (Group 1 - 1e / Unstable, Group…
Trends
Electron Configurations
Each family shares similar properties.
Examples
Group 1 - 1e / Unstable
Group 18 - Filled and Unstable
The number of electrons in the outermost orbital dictate properties.
Atomic Radius or Atomic Number
PT. L -) / R Elements get smaller
PT.T -) B element gets bigger
H - Smallest
Fr - Largest
Ionization Energy
Def.
The amount of energy needed to remove an electron.
Trend
L -) R - Energy need increases
T -) B Energy need decreases
Electronegativity
Def.
The ability to attract other electrons
Trends
Nonmetals will have a higher electronegativity.
Metals will have a low Electronegativity.
Important people who worked on the Periodic Table.
Mendeleev
Dobereiner
Lothar Meyer
Henry Mosley
Families on the Periodic Table
Periodic Law