Source of phosphorus (P)
Phosphorus is a very reactive element, so it does not occur free in nature. It is found combined with oxygen as phosphate ion (PO43-).
The chief minerals in which it occurs are :
- Phosphorite [Ca3(PO4)2]
- Fluorapatite [3Ca3(PO4)3. CaF2]
- Chlorapatite [3Ca3(PO4)2CaCl2]
Phosphorus has three allotropic forms : (i) Red P (ii) White P and (iii) Black P.
White P has regular tetrahedral structure.
Molecular Structure of Phosphorus