Question 1
The meniscus of mercury curves downward at the edges. Explain using the concepts of cohesion and adhesion.
Question 2
A certain metal fluoride crystallizes in such a way that the fluoride ions occupy simple cubic lattice sites, while the metal atoms occupy the body centers of half the cubes. The formula for the metal fluoride is:
◦ MF2
◦ M2F
◦ MF
◦ MF8
◦ None of these are correct
Answer 1
In mercury the cohesive forces within the liquid are stronger than the adhesive forces toward glass.
Answer 2
MF2