2.4. Ions and ionic bonds
A subsection of Chemistry, 0620, through 2. Atoms, elements and compounds
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For Examiner's Use The structure of a typical ionic compound is a regular arrangement of positive and negative ions. + – + – + – + – + – + – + – + – – + – + + – + – What is the name of this regular arrangement of particles? Give two physical properties of ionic compounds. Ions are formed by electron loss or gain. The electron distribution of a magnesium atom is 2 + 8 + 2 and of a nitrogen atom is 2 + 5. Give the formula of the magnesium ion. Give the formula of the nitride ion. What is the formula of the ionic compound, magnesium nitride? In this compound there is an ionic bond. Why are the two ions attracted to each other?
0620_w05_qp_3
THEORY
2005
Paper 3, Variant 0
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