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Phosphorus was discovered by German alchemist Hennig Brand
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Cobalt was first discovered by a Swedish chemist Georg Brandt.
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Platinum was discribed by Julius Caesar Scaliger in 1557. But the metal was observed by Antonio de Ulloa and Don Jorge Juan y Santacilia in 1748.
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Nickel was discovered by the Swedish chemist Axel Fredrik Cronstedt.
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Hydrogen was discovered by English chemist and physicist Henry Cavendish.