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Why is white phosphorus kept under water...

Why is white phosphorus kept under water ?

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Due to angle strain and weaker forces of attraction, ignition temperature of white P is very low (303 K). Therefore, on exposure to air, it spontaneously catches fire forming `P_(4)O_(10)`. Therefore, to protect it from air, it is kept under water.
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Assertion : White phosphorus is stored under water. Reason: White phosphorus is highly reactive and get oxidised on coming in contact with air.

PRADEEP-P-BLOCK ELEMENTS (NITROGEN FAMILY)-ADDITIONAL QUESTIONS (VERY SHORT ANSWER QUESTIONS)
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  10. Why is PCl(5) more covalent than PCl(3) ?

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  11. Why does PCl(5) fume in moisture ?

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  14. What is the oxidation number of phosphorus in H(3)PO(2) molecule ?

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  15. H(3)PO(2)andH(3)PO(3) act as good reducing agents but H(3)PO(4) does n...

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  16. Why does H(3)PO(3) act as a reducing agent but H(3)PO(4) does not ?

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  17. Why does orthophosphoric acid exist as a syrupy liquid ?

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  18. How is pyrophosphoric acid related to orthophosphoric acid ?

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  19. What kind of molecules show disproportionation reactions ? Give one e...

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  20. CN^(-) ion is known but CP^(-) ion is not known.

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