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Why is red phosphorus less reactive than white phosphorus?

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Red phosphorus is less reactive than white phosphorus due to differences in their molecular structures and arrangements of atoms. White phosphorus consists of tetrahedral P4 molecules, each containing four phosphorus atoms bonded together in a highly strained, reactive structure. These P4 molecules...
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Red phosphorus is less reactive than white phosphorus due to differences in their molecular structures and arrangements of atoms. White phosphorus consists of tetrahedral P4 molecules, each containing four phosphorus atoms bonded together in a highly strained, reactive structure. These P4 molecules are held together by weak van der Waals forces.

In contrast, red phosphorus has a polymeric structure, with long chains or layers of phosphorus atoms bonded together in a more stable arrangement. This structure makes it less prone to spontaneous combustion and less reactive with other substances compared to white phosphorus.

Additionally, white phosphorus is highly reactive because it readily reacts with oxygen in the air to form phosphorus pentoxide, producing intense heat and light, which can lead to spontaneous ignition. Red phosphorus, on the other hand, is much less reactive with oxygen and requires higher temperatures to ignite.

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