4.1 key ideas

What are the characteristics of metals?

- high boil point

-good conductors of electric in solid and liquid states

-malleable and ductile

-high densities

-good conductors of heat

-lustrous/reflective

-low electronegativities

-low ionisation energies

-react by losing electrons

Metallic bonding

Electrostatic forces of attraction between a lattice of positive ions and delocalised valence electrons

Trend of ionisation

-increase left to right

-decrease top to bottom

Ionisation energy

The amount of energy needed to remove an electron from an atom