White phosphorus exhibits phosphorescence, which is a form of chemiluminescence resulting from its slow oxidation when exposed to air. This process releases energy in the form of light, causing it to glow faintly in the dark. This is often referred to as 'cold light'.
White Phosphorus glows in the dark due to:
Asked in UPSC NDA 2 2015 · Topic: Non-metals (Phosphorus: Allotropes (White, Red, Black), preparation, properties, and compounds (Phosphoric Acid, Phosphine))
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