Question

Explain why mercury does not wet the glass surface

Answer 1

$here's\: your \: answer$

T͟h͟i͟s͟ i͟s͟ a͟l͟l͟ b͟e͟c͟a͟u͟s͟e͟ o͟f͟ f͟o͟r͟c͟e͟ o͟f͟ a͟d͟h͟e͟s͟i͟o͟n͟ b͟e͟t͟w͟e͟e͟n͟ t͟h͟e͟ m͟o͟l͟e͟c͟u͟l͟e͟s͟ i͟n͟ w͟h͟i͟c͟h͟ t͟h͟i͟s͟ i͟s͟ m͟o͟r͟e͟ o͟r͟ l͟e͟s͟s͟ t͟h͟a͟n͟ f͟o͟r͟c͟e͟s͟ o͟f͟ c͟o͟h͟e͟s͟i͟o͟n͟.

In mercury , the force of adhesion between the molecules and glass is less than the forces of cohesion , a͟s͟ c͟o͟r͟o͟l͟l͟a͟r͟y͟ t͟o͟ t͟h͟a͟t͟ ,m͟e͟r͟c͟u͟r͟y͟ d͟o͟e͟s͟ n͟o͟t͟ w͟e͟t͟ t͟h͟e͟ g͟l͟a͟s͟s͟ s͟u͟r͟f͟a͟c͟e͟ .

$hope \: it \: helps \: you \: thanks$

Answer 2

cohesive force of liquid Mercury is greater than adhesive force between Mercury and glass due to which it does not wets the surface of glass.

*Cohesive Force: force of attraction between molecules of same substance (mercury).

*Adhesive Force: force of attraction between molecules of different substance (Mercury & liquid).

hope it will help you.Yet have any doubt then ask me.