Problem: Chlorine, atomic number 17, has 17 electrons in total. How many electrons are in the outer shell (or valence shell)?  A. 4. B. 5 C. 6 D. 7  

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Chlorine, atomic number 17, has 17 electrons in total. How many electrons are in the outer shell (or valence shell)? 

A. 4.

B. 5

C. 6

D. 7

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Our tutors have indicated that to solve this problem you will need to apply the Atomic Structure concept. You can view video lessons to learn Atomic Structure. Or if you need more Atomic Structure practice, you can also practice Atomic Structure practice problems.

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