4 - Bonding and Structure

Question 1

Lattice

Answer 1

A regular arrangement of atoms or ions in a crystal.

Question 2

Delocalized electrons

Answer 2

Bonding electrons which are not fixed between two atoms in a bond. They are free to move and shared by several or many or more atoms.

Question 3

Metallic Bonding

Answer 3

The strong attraction between a lattice of positive metal ions and a sea of delocalised electrons.

Question 4

First electron affinity

Answer 4

The energy change when each atom in one mole of gaseous atoms gains one electron to form one mole of gaseous ions with a single negative charge.

Question 5

Lattice Energy

Answer 5

The standard enthalpy change when one mole of the compound forms from free gaseous ions.

Question 6

Polarization

Answer 6

The distortion of the electron cloud in a molecule or ion by a nearby charge.

Question 7

Dative covalent bond

Answer 7

A bond in which two atoms share a pair of electrons, both electrons being donated by one atom.