Answer:
1.) The atomic mass of the most common isotope of carbon is 12.
2.) The element with an atomic number of 4 is beryllium.
3.) Electrons exist in orbitals around the nucleus.
4.) Oxygen has 8 protons in the nucleus.
5.) An isotope of an element has the same number of protons but a different number of neutrons.
12
beryllium
Electrons
8
neutrons
Explanation:
Poyo
true
