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Test 3(2) - 1 Elements from opposite sides of the periodic...

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1) Elements from opposite sides of the periodic table tend to form __________. A) covalent compounds B) compounds that are gaseous at room temperature C) covalent compounds that are gaseous at room temperature D) ionic compounds E) homonuclear diatomic compounds Answer: D Page Ref: Sec. 8.2 2) Why don't we draw double bonds between the Be atom and the Cl atoms in BeCl 2 ? A) That would result in more than eight electrons around each chlorine atom. B) That would result in the formal charges not adding up to zero. C) That would give positive formal charges to the chlorine atoms and a negative formal charge to the beryllium atom. D) There aren't enough electrons. E) That would result in more than eight electrons around beryllium. Answer: C Page Ref: Sec. 8.7 3) Which of the following would have to lose two electrons in order to achieve a noble gas electron configuration? O Sr Na Se Br A) Sr B) Na C) Sr, O, Se D) Br E) O, Se Answer: A Page Ref: Sec. 8.1 4) A valid Lewis structure of __________ cannot be drawn without violating the octet rule. Page Ref: Sec. 8.7 5) The Lewis structure of AsH 3 shows __________ nonbonding electron pair(s) on As. Page Ref: Sec. 8.5 E-1
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