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Energy level

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An energy level is a definite stable energy that a physical system can have that is used especially of the state of electrons in atoms or molecules. According to quantum theory only certain energy levels are possible.



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Sphene

... from Sphene Titanite is a calcium titanium silicate mineral with a chemical formula, CaTiSiO5. Also called Sphene, it occurs as a translucent reddish ...