Q. The atomicity of phosphorus is X and the PPP bond angle in the molecule is Y . what are X and Y ?
A) X=4,Y=90${^\circ}$
B) X=4,Y=60${^\circ}$
C) X=3,Y=120${^\circ}$
D) X=2,Y=180${^\circ}$
Explanation
(b)
White phosphate has the molecular formula p_{4} both in solid and vapour state at moderate temperature. The four atoms present in the molecule are arranged at the corners of tetrahedron so the ppp bond angle is $60{^\circ}$. At higher temperature(above$\ 700℃$ )it dissociates to give diatomic molecules as
[image:7_image20.emf]
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.