# Fill in the blanksNon - metal which is stored in water _______.

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Hint:. That non – metal is situated in the VA group of p-block in the periodic table and their atomic number is 15. That non -metal is present in mainly two forms in nature and shows white and red appearance.

Phosphorus is highly chemically reactive in nature and easily gets oxidized in the atmosphere and catches fire. And melting point of phosphorus is very low which is around ${\text{4}}{{\text{4}}^{\text{0}}}{\text{C}}$ that’s why it easily catches fire in the atmospheric condition.
Additional information: Configuration of electrons in the phosphorus atom is shown as $1{s^2},2{s^2}2{p^6},3{s^2}3{p^3}$ and from this given configuration it is clear that in phosphorous five valence electrons are present.
-Generally phosphorus shows $- 3$ and $+ 3$ oxidation state, because by accepting $3$ electrons and by removing $3$ electrons it achieves stable electronic configuration i.e. $2$ and $8$ respectively.
-Due to its reactive behavior in nature phosphorus is present in ${{\text{P}}_{\text{4}}}$ form.