Topical Questions
These questions are keyed to the major topics in the chapter. Usually a question that is answered at the back of this book is paired with a similar one that is not.
Write the formula for each substance. Which substances are ionic?
(a) Methane
(b) Dinitrogen pentaoxide
(c) Ammonium sulfide
(d) Hydrogen selenide
(e) Sodium perchlorate
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