(a) Write the electron arrangement in (i) a magnesium atom, and (ii) an oxygen atom. (b) How many electrons
(a) Write the electron arrangement in (i) a magnesium atom, and (ii) an oxygen atom.
(b) How many electrons are there in the valence shell of (i) a magnesium atom, and (ii) an oxygen atom ?
(c) Name the solvent in which ionic compounds are generally soluble.
(d) Why are aqueous solutions of ionic compounds able to conduct electricity ?
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(a) (i) Magnesium -2, 8, 2
(ii) Oxygen – 2, 6
(b) (i) Magnesium = 2
(ii) Oxygen = 6
(c) Water .
(d) An aqueous solution of an ionic compound conducts electricity because there are plenty of free ions in the solution which are able to conduct electric current.
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