I’m thinking maybe b and d but I’m not sure I wanna be 100% sure

A and C

Explanation:

It's not B because ...the atomic number refers to the number of protons (not electrons)  in the nucleus of an atom.

It's not D because the number of protons  (not neutrons) determines which kind of element an atom is.

what is the average time it took the car to travel 0.25 meters?

⇒ 2.23 seconds

what is the average time it took the car to travel 0.50 meters?

⇒ 3.13 seconds

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the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl