What is the valence shell electron configuration of the element with atomic number 17?
- 1s2 2s2 2p6 3s2 3p4
- 1s2 2s2 2p6 3s2 3p5
- 2s2 2p6
-
3s2 3p5
The correct answer is: D
Explanation
It's important to take note of "valence shell" used in the presentation of the question.
Hence; Option D carries the answer as specified in the question.