Chemistry · May / June 2022 · Paper 12 · Question 10
5070Simple molecules and covalent bonds
A molecule of tetrafluorosilane, SiF4, is shown in the dot-and-cross diagram. Only the outer shell electrons are shown. Which statement is correct?
- AEach molecule of SiF4 has exactly 16 pairs of electrons.
- BIn SiF4 both the silicon and the fluorine have the same electronic configuration as neon.
- CMolten SiF4 will conduct electricity.
- DSiF4 has a low melting point.
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Correct answer: D. SiF4 has a low melting point.
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