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Valency PH4

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PH4 is a hypothetical molecule. Phosphorus (P) typically has a valency of 3 or 5. In PH3 (phosphine), phosphorus has a valency of 3, and in PCl5 (phosphorus pentachloride), it has a valency of 5. However, PH4 would require phosphorus to have a valency of 4, which is not its typical behavior.

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