For each bond tell whether it is nonpolar or polar. Also state the direction of the dipole. C-N, O-H, S-Br?
Answer:
Electronegativty will help figure this out! Electronegativty increases in an element from the bottom right of the periodic table to the top left. And if an two elements with different electronegativites are bonded, you will get a polar bond (if they are VERY different, its usually an ionic bond...)
So, with C and N, the electronegativities are almost the same, so its a non polar bond.
In OH the Oxygen is much more electronegative, so the bond is non polar and the dipole is in the direction of the oxygen (more negative charge on the oxygen).
I know you can do the rest!
Good luck!
If electronegativities of the bonded atoms are different, the bond is polar and dipole points towards the more electronegative atom:
C-N polar towards N
Try the rest yourself
They are all polar! ack I thought CN was nonpolar too but check out the link
CN, C is positive http://en.wikipedia.org/wiki/carbon-nitr...
OH, H is positive
S-Br, S is positive
P-Cl, P is positive
P-O, P is positive
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