Spec 1CH0
Revise Edexcel GCSE Chemistry 2.3.1 Ions and the formation of ionic bonds with the question bank, lessons, revision guides, and flashcards.
1.21 Explain how ionic bonds are formed by the transfer of electrons between atoms to produce cations and anions, including the use of dot-and-cross diagrams. 1.22 Explain that an ion is an atom or group of atoms with a positive or negative charge. 1.23 Calculate the numbers of protons, neutrons and electrons in simple ions given the atomic number and mass number. 1.24 Explain the formation of ions in ionic compounds from their atoms, limited to elements in groups 1, 2, 6 and 7. Assessed at both Foundation and Higher tier.
