Phosphorus has 16 neutrons. There are 23 isotopes of phosphorus in which the only stable isotope is P-31 with an abundance of 100%. The remaining are radioisotopes.

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What is white phosphorus?

White phosphorus is an allotrope of phosphorus. It exists as tetraphosphorus (P4) in a form of a molecule. It is made of four atoms forming a tetrahedral arrangement. It exists in two crystalline forms alpha and beta. It is a translucent waxy substance turning into yellow when exposing to light. It is highly flammable and pyrophoric on exposing to oxygen.

It is highly toxic, on ingestion it causing Hepatotoxicity and necrosis of the jaw. On combustion, it produces a garlic-like smell. It is soluble in disulfur dichloride, benzene and oils. It is sparingly soluble in water and for safety purposes, it is stored in water.


How many electrons does phosphorus have?

The electronic configuration of phosphorus is [Ne] 3s2 3p3. The phosphorus atom has 15 electrons.