Answer:
Explanation:
uestion
If an atom of an element has a mass number of 45 and it has 20 neutrons in its nucleus, what is the atomic number of the
element?
H2 is a covalent bond. Each hydrogen atom shares its single electron to the other, so each hydrogen has two valence electrons (full outer shell).
I think the best answer would be D. Dolphin!
Precision relates to how close the answers are to each other, so I’d think it would be D because of the limited range between data points.