I was very concerned by the article “Cloudy Outlook for Sunscreen Market” in the Nov. 28, 2022, issue of C&EN (page 13). The danger of skin cancer and the benefits of sunscreens in preventing skin ...

Use this page to revise the following concepts within redox reactions: Rule 1: For elements, their oxidation numbers are all 0. Examples: \(\text{O}\) in \(\text{O}_2 ...

The metal atoms are losing electrons to form an ion. They are being oxidised. \(Mg(s) \to Mg_{}^{2 + }(aq) + 2e_{}^ - \) This is known as an ion-electron equation. Reduction is the opposite of ...

oxidation is the loss of electrons reduction is the gain of electrons All of the half equations occurring at the cathode show electrons being gained, so they all show reduction taking place. The ...