Chemistry: 5) Periodic Patterns

Atomic Radius

increases down a group, decreases across a period, Francium

Ionization Energy

decreases down a group, increases across a period, Helium

Electronegativity

decreases down a group, increases across a period, Fluorine

Metallic Character

increases down a group, decreases across a period, Francium

Atomic Radius Definition

size

Ionization Energy Definition

The energy required to remove an electron from an atom

Electronegativity Definition

Atom’s tendency to attract electrons when forming a chemical bond

Metallic Character Definition

Metallic properties: thermal conductivity, malleability, ductility, loose electrons, and form positive ions