Question

Pick out the incorrect statement.
A. Except nitrogen, all the elements of group 15 exist in allotropic modification
B. Only at high temperatures, greater than 1070 K, phosphorus vapours dissociates into `P_2` molecules
C. Red P is obtained by heating white phosphorus at 540-570 K in the absence of air for several hours.
D. White P is more reactive, but less soluble in `CS_2` (and other organic solvents) than red P.

Answer 1

Correct Answer - D
White phosphorus is readily soluble in `CS_2` and other organic solvent, but red phosphorus is insoluble in these.