(a) Write down the electron arrangement in (i) a magnesium atom, and (ii) a chlorine atom.
(a) Write down the electron arrangement in (i) a magnesium atom, and (ii) a chlorine atom.
(b) How many electrons are there in the valence shell of (i) a magnesium atom, and (ii) a chlorine atom ?
(c) State whether magnesium chloride will conduct electricity or not. Give reason for your answer.
(d) Why are covalent compounds generally poor conductors of electricity ?
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(a)(i) Magnesium: 2, 8, 2 (ii) Chlorine: 2, 8, 7
(b)(i) 2 (ii) 7
(c) Magnesium chloride will conduct electricity because it is an ionic compound .
(d) Covalent compounds are generally poor conductors of electricity b ecause they do not contain ions.
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