Is phosphourus an allotrope?

Answer 1

Phosphorus is an element, that can exist in several allotropic forms....

#"Allotropy"# describes the propensity of some elements to exist in several structural forms. Phosphorus can exist as discrete #P_4# molecules, #"white phosphorus"#, or a less reactive #"red phosphorus"# form. Sulfur is the other element for which allotropy is pronounced.

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Answer 2

Axel Alvarado

No, phosphorus is not an allotrope in and of itself. However, it does exist in a variety of allotropes, such as white, red, and black phosphorus.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.