![An atom has a mass number of 37 and atomic number 17. How many protons does it have?](https://www.gkseries.com/blog/wp-content/uploads/2022/01/An-atom-has-a-mass-number-of-37-and-atomic-number-17.-How-many-protons-does-it-have.png)
Q. An atom has a mass number of 37 and atomic number 17. How many protons does it have?
A. 20
B. 54
C. 17
D. 21
Answer: 17
A. 20
B. 54
C. 17
D. 21
Answer: 17
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