Question

Would NaCl have a lower melting point than NaF?

Answer 1

Intermolecular forces here

Answer 2

@yummydum Is this a yes or no question or one where u need to explain? ^-^

Answer 3

i would say nacl is more electronegative so it has a higher mp and bp....yes?

Answer 4

bit of both :)

Answer 5

NaCl - sodium cholrite - melting point: 1,473 f

NaF - sodium flouride - melting point: 1,819 f

Answer 6

T.T

Answer 7

You don't need exact values...try to think in terms of periodic table

Answer 8

nacl is sodium cholride not sodium chlorite... o.O

Answer 9

So the answer is yes yummydum ^-^

Answer 10

think of atomic size and periodic trend. also you might want to consider electronegativity and bonding.

Answer 11

spelling mistake

Answer 12

^big difference :P

Answer 13

v.v

Answer 14

never mind XD

Answer 15

brb ^-^

Answer 16

I will try my best to help ^-^

Answer 17

@abb0t i did....and that's why im confused
nacl is more electronegative than naf so it should have a higher mp/bp but then apparenlty im wrong...help meh D:

Answer 18

Well, speaking in terms of size, fluorine is smaller than chlorine. So, the fluorine ions can get closer to the Na\(^+\) ions, leading to a greater electrostatic attraction and hence stronger bonds. The stronger the bond, the higher the MP. Yes?

Answer 19

if you think of dipole dipole forces, the more electrons a molecule has the higher the force, the stronger the bond, yes?
so wouldnt that make NaF weaker than NaCl?

Answer 20

A stronger bond means it takes more energy to break it and melting is about breaking old bonds and forming new ones

Answer 21

http://en.wikipedia.org/wiki/Ionic_radius

Answer 22

okay so in the end, which is gonna have the higher mp?

Answer 23

NaF, dude! Didn't you say it earlier?

Answer 24

just making sure :D

Answer 25

ok don't lash out on me but just to make sure..if i was to put NaCl, NaF, and NaI, in order of increasing melting points would it go like this
NaI, NaCl, NaF?
or the opposite?

Answer 26

You do know that wikipedia has Melting Point AND Boiling Point values of these compounds, right?

Answer 27

it all makes sense now ^_^
thanks @abb0t :D

Answer 28

And your order is correct, IF you're increasing in Melting Point. Which it is, right? :)

Answer 29

yes increasing melting points
and my reason would be because NaF has more elctronegativity than NaCl, and NaCl is more electronegative than NaI. Higher electronegativity means stronger bonds, requiring more energy to break those bonds causing a higher melting point.
yes? :D

Answer 30

Yeah, that's part of the answer, but I think you should also talk about atomic radii. Fluorine is smaller of the three, so it has the most attraction because of the small distance to the positively charges nucleus. Does that make sense?

Answer 31

yurp.