Chemistry

Question Analysis
This question involves the identification of bond types in different compounds and the distinction between compounds with pure ionic bonds and those containing covalent bonds (or mixed bonds).

Key Concept Explanation
Ionic bonding typically occurs between a metal and a nonmetal, where the metal loses electrons to become a cation and the nonmetal gains electrons to become an anion.

Step-by-step Solution
1. Recall the condition for compounds with only covalent bonds: Composed of nonmetals only; no metal elements involved.
2. Analyze each compound:
HNO₃: Hydrogen (H), nitrogen (N), and oxygen (O)—all nonmetals

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