kayb6ugsyulSKaterra kayb6ugsyulSKaterra

21-02-2016
Chemistry

contestada

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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