Good acronym to remember that atomic mass equals the protons plus neutrons.
Understand the Problem
The question is asking for a mnemonic or acronym that can help remember the relationship that atomic mass is equal to the sum of protons and neutrons in an atom.
Answer
PEN = Proton, Electron, Neutron.
The final answer is PEN = Proton, Electron, Neutron.
Answer for screen readers
The final answer is PEN = Proton, Electron, Neutron.
More Information
The acronym 'PEN' signifies Proton, Electron, Neutron, helping to remember the components of atoms. While electrons don't contribute to atomic mass directly, protons and neutrons do. Therefore, the mass number is the sum of protons and neutrons.
Tips
A common mistake is thinking electrons contribute to the atomic mass, but they have negligible mass.
Sources
- The web page with info on - Example Source - brainly.com