In this episode, Dr Sunayana Bhargava and Tulela Pea look at Groups 1, 7 and 0 of the Periodic table, exploring the properties of the elements in each Group. Suitable for: AQA, Edexcel, OCR. For more ...

Atoms contain protons, neutrons and electrons. The electrons are arranged in shells around the nucleus. The periodic table The periodic table is a chart of all the elements arranged in increasing ...

The periodic table has been stamped into the minds of countless generations of schoolchildren. Immediately recognised and universally adopted, it has long since achieved iconic status. So why change ...

At any given point of time, there is only about 25 g of astatine that occurs naturally on our planet. If that doesn’t wow you, then it’ll help to nudge you along by mentioning that that is less than ...