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29 May, 18:29

Which is the correct formula for phosphorus pentachloride? PCl4 because a subscript of 4 indicates four Cl atoms PCl5 because a subscript of 5 indicates five Cl atoms P5Cl because a subscript of 5 indicates five P atoms P5Cl3 because a subscript of 5 indicates five P atoms

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  1. 29 May, 21:49
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    PCl₅ because a subscript indicates 5 chlorine atoms.

    Explanation:

    As the name suggests, phosphorous pentachloride contains 5 chlorine atoms as penta means five and phosphorous means P atoms.
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