How Do You Calculate Protons, Neutrons, and Electrons in Isotopes?

[kingbryant]

Homework Statement

state the number of protons electrons and neutrons of these:
Magnesium-25
Cu-65

Homework Equations

protons is the same as atomic numbber, same with electrons. NEUTrons is atomic number - atomic mass

The Attempt at a Solution

Magnesium-25 Cu-65
p- 12 p-29
e-12 e-29
n 25-12=13 n-65-29=36

am i right?

 

[G01]

Looks good.