webquiz_1_answers - Grodin Micah Webquiz 1 Due Feb 3 2006...

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Grodin, Micah – Webquiz 1 – Due: Feb 3 2006, 11:00 pm – Inst: Sara Sutclife 1 This print-out should have 5 questions. Multiple-choice questions may continue on the next column or page – ±nd all choices be²ore answering. The due time is Central time. 001 (part 1 o² 1) 10 points A metal (call it X) in Group IIA o² the peri- odic table ²orms a compound with an element (call it Y) o² Group VIIA. What would be the most likely ²ormula and nature o² the compound? 1. XY 6 ; covalent 2. XY 2 ; covalent 3. XY 2 ; ionic correct 4. X 2 Y; covalent 5. X 2 Y; ionic Explanation: Metals reacts with non-metals to ²orm ionic compounds, which involve the trans²er o² elec- trons. A metal X in group IIA would have two valence electrons. It would lose two electrons to become isoelectronic with the preceding noble gas. This metal would now have two ²ewer electrons than protons and would have a +2 charge. An element Y in group VIIA would have seven valence electrons. It would gain one electron to become isoelectronic with the nearest noble gas.
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webquiz_1_answers - Grodin Micah Webquiz 1 Due Feb 3 2006...

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