G11 EOYE Revision Structures and Reactivity

An electrically charged species that is formed after an atom gains or loses an electron.

A non-contact attractive force that occurs between particles of opposite charge.

Electrostatic attraction between oppositely charged ions that holds the ions in close proximity.

Ions made up of more than one atom, which have become charged due to the overall loss or gain of electrons.

A three-dimensional regular repeating arrangement of ions, atoms or molecules in a crystalline solid.

The enthalpy change when one mole of a solid ionic compound breaks down to form individual gaseous ions.

• Bond enthalpy

• Lattice enthalpy

• Bond dissociation enthalpy

• Ionization enthalpy

Which substance is most likely to be ionic?

• D

• B

• A

• C

Which compound contains both ionic and covalent bonds?

• CH₂Cl₂

• CH₃COOH

• NaOH

• MgO

Iron (II) sulfide, FeS, is ionically bonded. Describe the bonding in this type of solid.

Answer explanation

electrostatic attraction ✔

between oppositely charged ions/between Fe2+ and S2- ✔

State the full electron configuration of the sulfide ion.