White (Yellow) Phosphorus vs Red Phosphorus
White or yellow Phosphorus
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Red Phosphorus
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It has garlic like order. | It is odourless. |
White phosphorus is poisonous. | It is non poisonous. |
It is highly reactive. | It is less reactive |
It is soft waxy solid and can be easily cut with a knife. | It is hard and crystalline solid. |
White phosphorus shows Phosphorescence. | It does not show phosphorescence. |
P4 molecules are held by weak vander Waal’s forces. | P4 molecules are held by covalent bonds in polymeric structure. |
Ignition temperature is low (303 K) so burns easily in air. | Ignition temperature is high(543 K), so does not catch fire easily. |
Burns easily in Cl2 forming PCl3 and PCl5. | Combines with Cl2 only on heating. |
Soluble in CS2 | Insoluble in CS2 |