Seudónimo Seudónimo

01-02-2016
Chemistry

contestada

How many neutrons are in an atom of sulfur with a mass number of 35?
a. 16
b. 17
c. 18
d. 19

Respuesta :

JimJamJon JimJamJon

01-02-2016

As the mass difference between protons and neutrons isn't too different we can determine how many neutrons an atom has by subtracting the number of protons from its atomic mass.

Sulfur has 16 protons, so 35-16 = 19. So there are 19 neutrons present.

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