Metallic/Ionic Features

Question 1

Dipole

Answer 1

a distribution of electric charge where one side is more positive and the other is more negative; instantaneous dipole is temporary and very short

Question 2

London Dispersion Forces

Answer 2

weak attractive forces due to instantaneous fluctuations in electron density (dipoles)

Question 3

Metals

Answer 3

conduct heat and electricity well when they are solids/liquids; malleable; low IE; delocalized (shared) electrons among the atoms

Question 4

Metallic bonding

Answer 4

coulombic attractions between the sea of shared electrons and the metal ions

Question 5

Ionic bonding

Answer 5

overall attraction making an ionic crystal lattice stable; ionic compound is more stable than the individual ions

Question 6

Formula unit

Answer 6

group of chemical symbols that indicates the smallest whole number ratio of ions to each kind that make up that substance

Question 7

Polyatomic ions

Answer 7

a group of atoms with an overall charge

Question 8

Lattice energy

Answer 8

the decrease in energy when the ionic crystal lattice forms from the separate ions; large lattice energy = big negative change in energy; very stable; increase with larger charges; decreases with bigger ion size