kayb6ugsyulSKaterra kayb6ugsyulSKaterra

21-02-2016
Chemistry

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An isotope of iron has 28 neutrons. If the atomic mass of the isotope is 54, how many protons does it have?
A. 26
B. 28
C. 54
D. 82

Respuesta :

Beth1309 Beth1309

21-02-2016

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

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Аноним Аноним

21-02-2016

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

54 - 28 = 26

Answer: 26

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