Remember your periodic table from high school chemistry? As of Monday, it will look a little different. Subscribe to read this story ad-free Get unlimited access to ad-free articles and exclusive ...

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A periodic table chart discovered at the University of St Andrews is thought to be the oldest in the world. The chart of elements, dating from 1885, was discovered in the University's School of ...

The origins of the periodic table lie in the 19th century, when chemists noticed that patterns began to emerge among the known chemical elements when they were organised by increasing atomic weight.