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General Chemistry

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Chemical Bonding

Question
10 out of 13
 

CH4 and SiF4 are examples of tetrahedral geometry. Which of the following are true regarding these two molecules?

I. The carbon-hydrogen bonds are dipoles

II. The silicon-fluorine bonds are dipoles

III. Methane is nonpolar

IV. SiF4 has zero dipole moment



A I & II only
B II only
C II & III only
D I, II, III & IV
Ans. D All the statements (I, II, III, and IV) are correct. Let's see why this is the case. All the individual bonds in both compounds are dipoles. This makes items I and II correct. The question says that both molecules are tetrahedral. Hence, these individual bond dipoles cancel out to give a net zero dipole.

Chemical Bonding Flashcard List

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