The terms in bold link to topics in the AQA, Edexcel, OCR, WJEC, CCEA and SQA specifications.
Mercury is a d-block metal that is not a transition metal, forming stable compounds in the (+2) oxidation state with the [Xe] 4f145d10 electron configuration. In the +2 state it forms a range of coordination compounds, usually containing two dative covalent bonds from ligands. Ligands that bind through carbon and sulfur form stable complexes involved in mercury’s toxicity.
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