Asked by demi
Which of the following molecules is polar?
1. CH4
2. BH3
3. NH3
4. CF4
5. H2
1. CH4
2. BH3
3. NH3
4. CF4
5. H2
Answers
Answered by
DrBob222
To be polar, molecules must have the following:
1. There must be a difference in electronegativity between the central element and the binding element(s).
2. The molecules must NOT be symmetrical.
CH4, for example, has a small difference in EN between C and H, but it is tetrahedral which makes it symmetrical and the CH4 molecule as a whole has no dipole moment.
1. There must be a difference in electronegativity between the central element and the binding element(s).
2. The molecules must NOT be symmetrical.
CH4, for example, has a small difference in EN between C and H, but it is tetrahedral which makes it symmetrical and the CH4 molecule as a whole has no dipole moment.
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