Silicon Halides Have Stronger Bonds Than Corresponding Carbon Halides

question 36

Multiple Choice

Silicon halides have stronger bonds than corresponding carbon halides. Which of the following is a possible explanation of this phenomenon?

• A)The larger silicon atoms permit better overlap of its atomic orbitals with those of the halogens than the smaller carbons atoms do.
• B)The large electronegativity difference between silicon and the halogens makes their bonds stronger than those of carbon.
• C)Silicon has the ability to form a partial double bond with a halogen through the overlap of its d-orbital with a p-orbital of the halogen.
• D)Silicon has a larger effective nuclear charge than carbon which allows it to bond more strongly to the more negative halogens than carbon.
• E)Carbon-halogen bonds are unusually weak.

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