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SiF4 exhibits a symmetrical tetrahedral structure due to sp³ hybridization of silicon in its excited state, whereas SF4 has a distorted tetrahedral or see-saw shape because of sp³d hybridization of sulfur and the presence of one lone electron pair in an equatorial position.

1. SiF4 has a symmetrical tetrahedral structure
2. SF4 has a distorted tetrahedral geometry
3. Both SiF4 and SF4 are tetrahedral in shape
4. None of these statements are correct

Correct answer: SF4 has a distorted tetrahedral geometry

Solution

SiF4 has a symmetrical tetrahedral shape due to sp³ hybridization, while SF4 has a distorted tetrahedral (see-saw) geometry due to sp³d hybridization and the presence of one lone pair on sulfur.

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