Atoms form ions in order to make a __________ outer shell.

Ionic bonds are formed between which type of atoms?

• Metals only

• A metal and a non-metal

• Non-metals only

• Two or more of the same atoms

How is an ionic bond formed?

• Shared pair of electrons between 2 atoms.

• Transfer of electrons from one atom to another.

• A sea of delocalised electrons.

• When 2 or more neutral atoms are near to each other.

What is an ionic bond?

• The electrostatic attraction between oppositely charges ions.

• The electrostatic attraction between a shared pair of electrons and the positively charged nuclei of the atoms involved.

• The electrostatic attraction between positive metal ions surrounded by a sea of delocalised electrons.

Select all that apply to ionic substances...

• They have low melting points due to weak intermolecular forces.

• They have very high melting points.

• It takes a lot of energy to overcome the strong electrostatic attractions between oppositely charged ions.

• They conduct electricity when solid.

• They conduct electricity when molten.

Which of the following are ionic compounds?

• Ni

• MgCl₂

• H₂O

• CH₄

• Al₂O₃

Which of the following are NOT ionic compounds.

• Calcium

• Iron Oxide

• Nitrogen

• Neon

• Lead Nitrate

Ionic substances exist as what?

• Giant ionic lattices.

• Metallic lattices.

• Simple molecules.

• Small molecules.

• Metal-ion lattices.

Potassium is in Group 1. What is the charge on a potassium ion?

• +1

• -1

• Neutral

• -2

• +2

True or false...Aluminium gives up 3 outer electrons to form Al²⁺?

• True

• False