Question 1
Explain why hydrogen fluoride (\(\text{HF}\)) is a gas at room temperature (\(25\,^{\circ}\text{C}\)) despite having a covalent bond between hydrogen and fluorine.
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Chemistry · Unit 1 · Properties and structure of materials · Compounds and mixtures
Explain the properties of covalent compounds by modelling covalent bonding as the sharing of an electron pair in the region between two nuclei with a strong electrostatic force of attraction between both nuclei.
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Question 2
Which statement best explains why the covalent bond in hydrogen fluoride (HF) is very strong?
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Question 3
Chlorine gas (\(\text{Cl}_2\)) has a boiling point of \(-34\,^{\circ}\text{C}\) at standard pressure. Explain why chlorine exists as a gas at room temperature (\(25\,^{\circ}\text{C}\)).
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