Question

What do all atoms of the same element have in common
Responses

number of neutrons
number of neutrons

total mass
total mass

number of protons
number of protons

size of nucleus
size of nucleus

Answer 1

All atoms of the same element have in common the **number of protons**. The number of protons in an atom determines which element it is. For example, all carbon atoms have 6 protons, while all oxygen atoms have 8 protons. The number of neutrons can vary among different isotopes of the same element, and the total mass can differ based on the isotopic composition and the number of neutrons. The size of the nucleus can also vary with the number of neutrons.