Which of the following elements has the highest combined number of protons and neutrons?
Hydrogen: 1 amu
Nitrogen: 14 amu
Oxygen: 16 amu
Boron: 10 amu
1 answer
Nitrogen has the highest combined number of protons and neutrons because it has 14 protons and 14 neutrons, giving it a total atomic mass of 28 amu.
1 answer