A student draws the displayed formula of ammonia, NH3\mathrm{NH_{3}}NH3, on paper.
Statement 1: It does not show which atoms are bonded to each other.
Statement 2: It does not show the three-dimensional shape of the molecule.
Statement 3: It does not show the non-bonding electrons on the nitrogen atom.
Which statements are limitations of the displayed formula?
1 and 2 only
1 and 3 only
2 and 3 only
1, 2 and 3
64 exam-style questions on OCR GCSE Chemistry 2.2 Bonding, covering 2.2.1 Metals, non-metals and the Periodic Table, 2.2.2 Types of chemical bonding and dot and cross diagrams, 2.2.3 Limitations of bonding models, and 2.2.4 Reactivity, atomic number and the modern Periodic Table. Each one has a worked solution and a mark scheme showing where the marks go.