What is the number of protons in nitrogen-15?

Understand the Problem

The question is asking for the number of protons in the isotope nitrogen-15. To answer it, we need to know that the atomic number of nitrogen is 7, which indicates it has 7 protons regardless of the isotope.

More Information

The number of protons in an atom is defined by its atomic number. Since the atomic number of nitrogen is 7, nitrogen-15 has 7 protons, just like its more common sibling, nitrogen-14.

Tips

Confusing isotopes' number of protons with their number of neutrons is a common mistake. Always look at the atomic number for protons.

Sources

• Nitrogen-15 - medchemexpress.com
• The atomic number of nitrogen is 7. How many protons, neutrons ... - socratic.org
• N-14 and N-15 are two isotopes of nitrogen... - homework.study.com