Practice Ionic Bond in Chemistry

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

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Quick Recap

A chemical bond formed by the electrostatic attraction between oppositely charged ions, created when one atom transfers one or more electrons to another atom.

One atom gives electrons away; another takes them. Opposites attract.

Showing a random 20 of 50 problems.

Example 1

medium
Determine the formula of the ionic compound formed by magnesium and nitrogen.

Example 2

challenge
A compound conducts when dissolved in water, has a high melting point, and is brittle. A student says it must be covalent. Correct them with reasoning.

Example 3

easy
Do ionic compounds typically have high or low melting points?

Example 4

hard
Predict which compound has a higher melting point: CaO\text{CaO} or KCl\text{KCl}. Justify with Coulomb's law.

Example 5

medium
What kind of structure do ionic compounds adopt in the solid phase?

Example 6

easy
Which of these compounds is ionic: CO2\text{CO}_2, NaCl\text{NaCl}, or CH4\text{CH}_4?

Example 7

medium
Explain why MgO\text{MgO} has a higher melting point than NaCl\text{NaCl}.

Example 8

hard
A compound has formula X2O3\text{X}_2\text{O}_3 where O is oxide (O2−\text{O}^{2-}). What is the charge on X\text{X}?

Example 9

easy
Why does solid salt not conduct electricity, but molten salt does?

Example 10

hard
Two ionic compounds, NaCl\text{NaCl} and NaF\text{NaF}, have similar charge magnitudes. Which has the larger lattice energy, and why?

Example 11

medium
What ion does sulfur typically form?

Example 12

easy
Write the charges that calcium and chlorine carry in an ionic compound.

Example 13

medium
How many electrons does a barium atom lose to form Ba2+\text{Ba}^{2+}?

Example 14

easy
What is the formula of the ionic compound from Ca2+Ca^{2+} and Cl−Cl^-?

Example 15

easy
Show how magnesium and oxygen form an ionic bond in MgO\text{MgO}.

Example 16

medium
Name the ionic compound KCl\text{KCl} using standard nomenclature.

Example 17

medium
Predict the formula of the ionic compound formed between aluminum and oxygen.

Example 18

easy
Why are ionic compounds typically solids at room temperature?

Example 19

medium
Explain why molten NaCl\text{NaCl} conducts electricity but solid NaCl\text{NaCl} does not.

Example 20

easy
Do ionic compounds form discrete molecules or extended lattices?
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