Periodic trends

For a group or family, from top to bottom

• Ionization Energy: Decreases

• Atomic Radius: Increases

• Electronegativity: Decreases

• Electron affinity: Decreases

For a period, from left to right

• Ionization Energy: Increases

• Atomic Radius: Decreases

• Electronegativity: Increases

• Electron affinity: Increases