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18.The Halogen family of elements all have 7 valence electrons. Which column would they be in?
a.01 (IA)
b.02 (IIA)
c.4 (IVA) or 14
d.7 (VIIA) or 17
Answers: 2
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Classify each statement about effective nuclear charge, zeff, as true or false.
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There is an area in idaho named craters of the moon where most of the ground is covered with basalt, adark gray, igneous rock with no visibl crystals. what can you infer about the geographical history of the area?
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18.The Halogen family of elements all have 7 valence electrons. Which column would they be in?
a.01...
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