Question

For which of the following species are the intermolecular interactions entirely due to dispersion forces?

A) C2H6 B) CH3OCH3 C) NO2 D) H2S E) CaNO3

Answer 1

im thinking it would be the nonpolar molecule...so A?

Answer 2

yup its A ...... because its non polar ..... we have hydrogen bonding in B, C and D

Answer 3

thus instantaneous-induced dipole forces are present between non polar molecule :D

Answer 4

c d and e dont have h-bonding o.O

Answer 5

sorry //// C , D , and E are POLAR

Answer 6

i misread the question :( //// but the answer is A

Answer 7

when flourine , chlorine, oxygen and nitrogen are present in a non symetrical molecule ... then it is polar

Answer 8

and polar molecule have permanent dipole

Answer 9

THUS A IS 110 % correct

Answer 10

idk how to prove c d and e are polar though

Answer 11

how do i prove they are polar?

Answer 12

you know something about dipole moment >????

Answer 13

all i know is drawing lewis...and it seems tedious

Answer 14

you know something about dipole moment >????

Answer 15

yes i know dipole moment...somehow

Answer 16

or relative electronegativity of elements

Answer 17

when the directions of the electronegativity in the lewis cancel out then zero dipole moment

Answer 18

FLORINE, CHLORINE AND OXYGEN .. are the MOST ELECTRONEGATIVE ELEMENT

Answer 19

mmhmm

Answer 20

NO2 is polar because it has a lone electron

Answer 21

unbonded

Answer 22

yeah...i figured that one out already :D

Answer 23

H2S is polar because of 2 lone pairs

Answer 24

H2S i think looks something like

Answer 25

yup its shape is bent

Answer 26

calcium nitrate...idk how that looks

Answer 27

you dont need the structure ..... just look at the oxygen ... secondly ... it is non symmetircal ... thus it must be polar

Answer 28

hmm i see