jonestheproblem2872 jonestheproblem2872

09-10-2017
Chemistry

contestada

Calcium has an atomic mass of 40 and an atomic number of 20, so the number of neutrons must be _______________

Respuesta :

30-09-2018

The atom would have 20 neutrons.

Mass number = neutrons + protons

40 = neutrons + 20

neutrons = 40 – 20 = 20

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Weser17 Weser17

23-01-2019

20 is the right answer for apex

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