After years of trying, scientists have finally created a stable superatom of copper, a long-sought-after chemical ...
Background A 47-year-old woman with an otherwise unremarkable medical history was referred to the multiple sclerosis clinic by her primary neurologist for evaluation of a 2–3 year history of ...
Dot and cross diagrams help us to model when ions are formed from atoms. Here’s an example using sodium and chlorine. They form ions which bond to form sodium chloride. 2. Work out how many electrons ...
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