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Why is red phosphorus less reactive than...

Why is red phosphorus less reactive than white phosphorus ?

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White P has following tetrahedral structure where each phosphorus is attached to 3 other phosphorus atoms by sigma bonds :

In red phosphorus , molecule forms a chain structure (polymer like ) where 2 inter molecular bonds are made by each `P_(4)` unit .
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Give reasons for the following: (a) Red phosphorus is less reactive than white phosphorus. (b) Electron gain enthalpies of halogens are largely negative. (c) N_(2)O_(5) is more acidic than N_(2)O_(3) .

White phosphorus is

(A) : White phosphorous is less reactive than red phosphorous (R) : White phosphorous has more bond angle strain than red phosphorous

Red phosphorus is reactive than white phosphorus as red phosphorus is poltmeric and consists of the of P_(4) units.

Red phosphorus is less reactive than yellow phosphorus because

Red phosphorus is less reactive than yellow phosphorus because