A dot and cross diagram can be used to represent a molecule of methane, CH4\mathrm{CH_{4}}CH4.
What is one limitation of this diagram?
It does not show the 3D shape of the molecule.
It does not show where each shared electron came from.
It does not show the number of covalent bonds present.
It does not show the outer shell electrons of carbon.
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.