Question

1. which of these has a mass of approximately 1 u? select all that apply. proton nucleus electron neutron

Explanation:

• A proton has a mass of approximately \(1\ u\).
• A neutron also has a mass of approximately \(1\ u\).
• The nucleus is made up of protons and neutrons, so its mass is much larger than \(1\ u\) (it depends on the number of protons and neutrons in the nucleus).
• An electron has a mass of approximately \(\frac{1}{1836}\ u\), which is much less than \(1\ u\).

Answer:

proton, neutron