how do you determine polarity, and what is the answer to this?
Which of the following molecules is most polar?
a. Cl2
b. HCl
c. NO
d. IBr
e. H2
2006-12-01 03:55:13 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Nonsymmetrical molecules are polar. The most polar molecules consist of one or more highly electronegative atoms or ions and one or more atoms or ions with minimal electronegativity.
Thus, Cl2 and H2 are not polar, and HCl is the most polar.
2006-12-01 04:00:57 · answer #1 · answered by DiphallusTyranus 3 · 0⤊ 0⤋
The factor which determines the polarity of a bond is the difference between the electronegativities of the two atoms in the bond. So, you should have available to you a table or something that shows atomic electronegativities.
Using that you can find the EN difference for each of these molecules. The one with the largest difference in ENs is the most polar.
Obviously Cl2 and H2 have an EN difference of 0 and so are absolutely non-polar. You can find the others for yourself.
2006-12-01 11:59:30 · answer #2 · answered by hcbiochem 7 · 0⤊ 0⤋
i think HCl because electronegativity difference of H & Cl is high.for a polar molecule,electronegativity difference among atoms should be high. Cl2 has zero e.n. difference.H2 also has zero.NO
& IBr has very less so answer is HCl
2006-12-01 11:59:11 · answer #3 · answered by Anonymous · 0⤊ 0⤋