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Uranium (chemical symbol U) is a naturally occurring radioactive element. In its pure form it is a silver-coloured heavy metal, similar to lead, cadmium and tungsten. Like tungsten it is very dense, ...
Models of the atom - AQA Atoms, isotopes and ions - AQA Uses and dangers of radiation - AQA Nuclear fission and fusion - AQA Sample exam questions - atomic structure - AQA ...
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