Chemistry 2e · 2.6 Ionic and Molecular Compounds

Ionic and Molecular Compounds: practice problems

3 problems from the book, with its answers. Check your working, or have any of them explained to you on the whiteboard.

1. Exercises 45

   Using the periodic table, predict whether the following chlorides are ionic or covalent: KCl, NCl₃, ICl, MgCl₂, PCl₅, and CCl₄.

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2. Exercises 47

   For each of the following compounds, state whether it is ionic or covalent. If it is ionic, write the symbols for the ions involved:

   (a) NF₃

   (b) BaO

   (c) (NH₄)₂CO₃

   (d) Sr(H₂PO₄)₂

   (e) IBr

   (f) Na₂O

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3. Exercises 49

   For each of the following pairs of ions, write the formula of the compound they will form:

   (a) Ca²⁺, S²⁻

   (b) ${\text{NH}}_4{}^{+}\text{,}$ ${\text{SO}}_4{}^{2-}$

   (c) Al³⁺, Br⁻

   (d) Na⁺, ${\text{HPO}}_4{}^{2-}$

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