Argon is used to fill some light bulbs because it is very unreactive.
Statement 1: Argon atoms have a full outer shell of electrons.
Statement 2: Argon atoms do not easily lose or gain electrons.
Statement 3: Argon exists as diatomic molecules with strong covalent bonds.
Statement 4: All Group 0 atoms, including argon, have eight electrons in their outer shell.
Which statements are correct?
1 and 2 only
1, 2 and 4 only
1 and 3 only
2, 3 and 4 only
113 exam-style questions on OCR GCSE Chemistry 4.1 Predicting chemical reactions, covering 4.1.1 Properties and trends in Groups 1, 7 and 0, 4.1.2 Properties of the transition metals, 4.1.3 Reactivity predicted from position in the Periodic Table, and 4.1.4 Reactivity of metals and the reactivity series. Each one has a worked solution and a mark scheme showing where the marks go.