A. 18
B. 20
C. 37
D. 17
Correct Answer:
Option B = 20
Explanation
The mass number = number of neutrons + atomic number.
number of neutrons = The mass number – atomic number.
number of neutrons = 37 – 17 = 20
A. 18
B. 20
C. 37
D. 17
Correct Answer:
Option B = 20
Explanation
The mass number = number of neutrons + atomic number.
number of neutrons = The mass number – atomic number.
number of neutrons = 37 – 17 = 20
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