Covalent Bond Examples in Chemistry

Start with the recap, study the fully worked examples, then use the practice problems to check your understanding of Covalent Bond.

This page combines explanation, solved examples, and follow-up practice so you can move from recognition to confident problem-solving in Chemistry.

Concept Recap

A bond formed when two atoms share one or more pairs of electrons, holding them together.

Atoms hold electrons together like kids sharing a toy. Neither gives it away.

Read the full concept explanation →

How to Use These Examples

  • Read the first worked example with the solution open so the structure is clear.
  • Try the practice problems before revealing each solution.
  • Use the related concepts and background knowledge badges if you feel stuck.

What to Focus On

Core idea: Shared electrons are attracted to both nuclei simultaneously, which holds the two atoms together.

Common stuck point: Single, double, and triple bonds share 2, 4, or 6 electrons respectively.

Worked Examples

Example 1

easy
How does a covalent bond form in a hydrogen molecule (\text{H}_2)?

Solution

  1. 1
    Each hydrogen atom has 1 valence electron and needs 1 more to fill its 1s shell.
  2. 2
    Two H atoms share their electrons, forming a single covalent bond: \text{H–H}.
  3. 3
    Each atom now effectively has 2 electrons, achieving the helium configuration.

Answer

\text{H:H or H–H (single covalent bond)}
Covalent bonds form when nonmetal atoms share electrons to achieve stable electron configurations. The shared pair is attracted to both nuclei, holding the atoms together.

Example 2

medium
Distinguish between single, double, and triple covalent bonds. Give an example of each.

Practice Problems

Try these problems on your own first, then open the solution to compare your method.

Example 1

easy
How many covalent bonds does carbon typically form? Explain why.

Example 2

medium
In a chlorine molecule (\text{Cl}_2), how many electrons are shared, and why does sharing help each chlorine atom?
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Background Knowledge

These ideas may be useful before you work through the harder examples.

chemical bondvalence electron