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Tpy6a [65]
3 years ago
6

What is the answer to this question?

Chemistry
1 answer:
lord [1]3 years ago
8 0
The answer is D.

The atomic number stands for the number of protons in each element. The number of protons is what is unique to each element. The number of neutrons varies; this is what isotopes are. The number of protons being the atomic number explains why the atomic number is an identifying characteristic of each element.
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