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Question 1
The formation of both ions and covalent bonds involves electrons. The table below shows the electronic configurations of atoms of hydrogen, lithium and chlorine. |
a) | What is the atomic number of chlorine? A 2 B 8 C 7 D 17
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b) | Draw a 'dot and cross' diagram to show how lithium (a group 1 metal) and chlorine (a group 7 non-metal) form lithium chloride.
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c) | Draw a dot and cross diagram to show the bonding in a molecule of hydrogen chloride, HCl.
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d) | Describe the different roles of electrons in the formation of:
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e) | Molten ionic compounds conduct electricity but molecular compounds are non-conductors, even when liquid. Explain why.
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