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Home Q & A Board Science-Related Homework Help Physics
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Chery Chery
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7 years ago
The atomic number and mass number for calcium-39 are 20 and 39, respectively.  How many neutrons are in one atom?
A) 1
B) 19
C) 20
D) 39
E) 59
Textbook 
College Physics

College Physics


Edition: 1st
Authors:
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lyalllyall
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7 years ago
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Chery Author
wrote...
#2
7 years ago
You're right again!

Appreciate it
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