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What is a phosphorus

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What is a phosphorus
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Kuldipak Pise 6 years, 11 months ago

the chemical element of atomic number 15, a poisonous, combustible non-metal which exists in two common allotropic forms, white phosphorus, a yellowish waxy solid which ignites spontaneously in air and glows in the dark, and red phosphorus, a less reactive form used in making matches.
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