The element whose atoms contain 7 protons is nitrogen.
Explanation:
1. Protons are positively charged subatomic particles found in the nucleus of an atom.
2. The number of protons in an atom determines the element it represents. This number is known as the atomic number.
3. Nitrogen has an atomic number of 7, meaning that each nitrogen atom contains 7 protons in its nucleus.
4. Therefore, in the context of the question, the correct answer is nitrogen.
