Problem: Which one of the following molecules/ions is nonpolar?a) SF4b) SO2c) HCO3-d) OCl2e) IF2−f) CH3Cl

FREE Expert Solution

SF4


Step 1: Sulfur (EN = 2.5) is less electronegative than fluorine (EN = 4) so sulfur is the central atom


Step 2: The total number of valence electrons present in SF4 is:


            Group             Valence Electrons

S         6A                   1 × 6 e6 e

F         7A                   4 × 7 e28 e

 Total:  34 valence e


Step 3: Sulfur follows an expanded octet to form 4 bonds while halogens, when not the central atom, form only 1 bond. The Lewis structure is:




Step 4: The electronegativity difference between S and F is 0.5 so the S–F bond is polar. Recall that dipole arrows point towards the more electronegative atom


Drawing the dipole arrows:


83% (49 ratings)
View Complete Written Solution
Problem Details

Which one of the following molecules/ions is nonpolar?

a) SF4

b) SO2

c) HCO3-

d) OCl2

e) IF2

f) CH3Cl

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Molecular Polarity concept. You can view video lessons to learn Molecular Polarity. Or if you need more Molecular Polarity practice, you can also practice Molecular Polarity practice problems.