Top Posters
Since Sunday
p
4
h
4
c
4
d
3
3
c
3
t
3
u
3
A
3
B
3
j
3
s
3
Home Q & A Board Science-Related Homework Help Physics
New Topic  
einsteindude einsteindude
wrote...
Go to Answer
Posts: 5058
Rep: 29 1
9 years ago
Why is calcium fluoride, CaF2, a high melting point crystalline solid while stannic chloride, SnCl4, is a volatile liquid?
A) There is no theory to predict the physical property of melting point. Melting point temperatures are empirically determined.
B) Actually, we would predict these results to be the opposite. Since each metal is combined with a group 17 halogen, the heavier metal (tin) combination should have the higher melting point.
C) CaF2 is a small, linear, non-polar molecule, while SnCl4 is a huge tetrahedral structure. Therefore the bonds in calcium fluoride tend to give it a higher melting point temperature.
D) Ionic compounds formed by elements on opposite sides of the periodic table, like CaF2, tend to have higher melting points than more covalently bonded structures, like SnCl4.
Textbook 
Conceptual Physical Science

Conceptual Physical Science


Edition: 6th
Authors:
Read 3196 times
2 Replies
Replies
Answer accepted by topic starter
bSharpbSharp
wrote...
#1
Top Poster
Posts: 3706
Rep: 309 0
9 years ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
keithpags11,  hschulz,  lloydramsey

Related Topics

wrote...
#2
9 years ago
Super! Don't forget to mark my post as best answer Grinning Face
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1240 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 853
  
 1534
  
 820
Your Opinion
How often do you eat-out per week?
Votes: 81
Previous poll results: What's your favorite math subject?