I think the answer you are looking for is D.
Hope this helps!!! :D
Answer:
carbon
Explanation:
Atomic radius represents the distance from the nucleus to the outer shell of an element.
Either protons or neutrons
Answer:
The atomic number of the sodium atom is 11. The atomic mass number can be estimated by rounding the atomic mass to 23.
Explanation:
The atomic number of the sodium atom is 11. The atomic mass number can be estimated by rounding the atomic mass to 23.