An isotope of iron has 28 neutrons. If the atomic mass of the isotope is 54, how many protons does it have?

Chemistry

2 answers:

Crazy boy [7]3 years ago

5 0

26 because you need to do 54-28=26
The atomic mass number is the number of protons AND neutrons together.

elena-14-01-66 [18.8K]3 years ago

4 0

An isotope is a varying in the neutrons because the protons NEVERRRR change!!

54 - 28 = <span>26
</span>
Answer: 26

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