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Electronic configuration of compounds and molecules

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1. What is the name of the following compounds?
a) SO2
b) NO2

2. Name the shapes of these molecules?
a) sulphur dioxide
b) sulphur hexafluride

3. Write the electronic configuration of
a) N2+
b) F-
c) O2-

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4. Cs ion

5. Ga ion

6. Pb ion
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14. N 3-

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16. Which elements are more electronegative, semimetals of nonmetals?
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20. Explain why the radius of a chloride ion (0.181 nm) is about twice that of chlorine atom (0.099 m).

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