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naming-ionic-covalent

naming-ionic-covalent - Naming Compounds Naming Compounds...

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Unformatted text preview: Naming Compounds Naming Compounds What's in a name? That which we call a rose By any other name would smell as sweet."- William Shakespeare, Romeo and Juliet (II, ii) • We can determine the formula of a compound by completing Lewis diagrams or via “valence” • Valence is “the number of electrons an atom must gain, lose, or share to complete its octet” • For representative elements valence starts at 1 (IA), climbs to 4 (IVA) and falls back to 1 (VIIA) • By knowing the valence of elements you can determine the formula of compounds • E.g. what compound would form from C + S? Step 1 - write valences: C 4 S 2 Step 2 - cross down valences: C 2 S 4 Background: valences and formulas Step 3 - simplify formula: CS 2 a) Al,Br b) K,S c) Zn,O d) Mg,N e) C,Cl f) Cu,O • We can determine the formula of a compound by completing Lewis diagrams or via “valence” • Valence is “the number of electrons an atom must gain, lose, or share to complete its octet” • For representative elements valence starts at 1 (IA), climbs to 4 (IVA) and falls back to 1 (VIIA) • By knowing the valence of elements you can determine the formula of compounds...
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