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It is important with any exam question to decide what you think is required to achieve each individual mark. In this question, I'd read it and decide that the two marks are for: 1) Describing the relevant...

The Haber process is an example of a reversible reaction where the reactants react to form the product and simultaneously the product reacts back to form the reactants. As a reversible reaction progresses...

Transition metal ions have partially filled d sub-shells. These shells split into two levels and the electrons in the lower levels can be excited to the higher ones by absorbing an amount of energy equiva...

protons (+1)

neutrons (0)

Chlorine is a gas at room temperature due to its structure.  Chlorine is made up of two chlorine atoms, held together by covalent bonds, forming simple covalent molecules.  Whilst the covalent bonds withi...