A magnesium atom reacts with two chlorine atoms to form magnesium chloride, MgCl2\mathrm{MgCl_{2}}MgCl2. Which account describes the electron transfer?
The magnesium atom transfers one electron, shared between the two chlorine atoms.
The magnesium atom transfers two electrons to each chlorine atom.
Each chlorine atom transfers one electron to the magnesium atom.
The magnesium atom transfers two electrons, one to each chlorine atom.
122 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.