06 Ionic Compounds

06 Ionic Compounds - Question from Last Time Does each of...

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1 1 Question from Last Time Does each of the following structures have the molecular formula C 6 H 14 ? A) yes B) no 2 These molecules are structural isomers (aka constitutional isomers), which means they have the same number of atoms of each kind (same molecular formula) but the atoms are connected together differently (different connectivity). There is one more! Can you draw it?
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2 3 Question from Reading 3.5 – 3.7 Which one of the following statements A – D is not correct? If all are correct respond E. A) An atomic ion can have a positive or negative charge because it has lost or gained electrons, respectively. B) In forming an ionic compound, a metal atom typically loses electrons to a nonmetal. C) A polyatomic ion is a unit of 2 or more atoms that has an electrical charge. D) When an ionic compound dissolves in water, it dissociates, and the ions separate from each other. E) All the above statements are correct. 4 When are binary compounds covalent and when are they ionic? If the two elements are close together on the Periodic Table, then they have similar electronegativities, share electrons, and form a covalent compound:  < 1.5 If the two elements are far apart on the Periodic Table, then they have very different electronegativities, and the more electronegative one takes electrons from the other to form an ionic compound: 2.0<  Mixed covalent/ionic (very polar) when 1.5<  2.0 See MSJ p 353 and GE p 73 for Periodic Table & EN Chart! Copies on Bb in Course Docs, print and bring to class
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3 5 But there are exceptions! CuCl 2 , a solid , dissociates into Cu 2+ and 2Cl - when it dissolves in water.
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06 Ionic Compounds - Question from Last Time Does each of...

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