All the following are characteristic properties of phosphorus. Which one is a chemical property?
(a) When exposed to air, white phos- phorus will burn spontaneously, but red phosphorus will not.
(b) Red phosphorus and white phos- phorus are solids.
(c) The white form is soluble in liquid carbon disulfide but is insoluble in water.
(d) The red form of phosphorus is in- soluble in both water and carbon disulfide.
(e) The red form melts at about 600 ◦ C, and the white form melts at44◦ C.