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
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Discussions (40)

The question says Vawulence electron, pls take note of that 'Vawulence electron' so the correct answer is D

please explain how you got the valence electron of the element with atomic number 17 to be option D. 3s2 3p5

the ans is D,dey were asking 4 d valence shell electron not d electronic configuration

I felt the answer was D
But after deep thoughts I realized that we were asked the valence electrons configuration not the total electric configuration
The valence electron for an element with atomic number 17 is 7
That's why D is the right answer

You know chlorine has an atomic number of seventeen and it belongs to group 7 which makes it an halogen




