Why does arsenic sublimate, while gallium melts?

  • #1
54
0
What does it tell you about a substance? A hight melting and boiling point means that the molecules hold together strongly, as in tungsten. A low melting point, as in hydrogen, means they're kinda loose. But what does the distance between them tell you?

Something something entropy yadda yadda enthalpy. But what?
 

Answers and Replies

  • #2
1,622
230
I'd say it says something about covalent or noncovalent nature of the bonds.
If the bonds are covalent and directional, then break them enough as to break down the long range order and you've broken mostly all of them.
If bonds are noncovalent, nearest neighbour interactions, you can break a few of them and allow atoms to slide from one nearest neighbour to another while still being bound in the liquid.
 

Related Threads on Why does arsenic sublimate, while gallium melts?

  • Last Post
Replies
2
Views
6K
  • Last Post
Replies
1
Views
793
  • Last Post
Replies
13
Views
19K
Replies
9
Views
130K
Replies
2
Views
40K
  • Last Post
Replies
1
Views
5K
Replies
19
Views
6K
Replies
10
Views
21K
Replies
6
Views
4K
  • Last Post
Replies
8
Views
3K
Top