Q. Which element exist as a solid at 25°C and 1 atm pressure among the following?
A) Br
B) Cl
C) Hg
D) P
Explanation
(d)
At 25°C and 1 atm pressure bromine and mercury (Hg) are liquid. Chlorine (Cl) is gas and phosphorus (P) is solid. (m.p. of white phosphorus=44°C)
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.