C
Why? As you increased energy levels the distance between two energy levels gets larger. This is often due to shielding
Answer: Isotopes of an atom are different because they have different atomic masses and different number of neutrons within their nucleus. They are the same since they will always have the same atomic number/number of protons in their nucleus.
Explanation:
I believe it is B. I’m sorry if i’m wrong. Tell me if i’m wrong or right!
I would say it would be a. It makes the most sense
