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Chemical Bonding and Molecular Structure — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryChemical Bonding and Molecular Structure2 Marks
Question
$\mathrm{AIF}_3$ is a high melting solid whereas $\mathrm{SiF}_4$​​​​​​​ is a gas. Explain.
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Answer

$\mathrm{AIF}_3$ is an ionic compound and there is strong force of attraction between $\mathrm{Al}^{3+}$ and $\mathrm{F}^{-}$ions. Whereas $\mathrm{SiF}_4$ is a covalent compound formed by sharing of electrons.

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