Was the above question correctly stated and correctly answered?

In [math]Ca^{19+}[/math], how many electron shells are there? answer is n=1,2,3,4 Then in ground state how can we found its valence  electron in 6th shell or n=6?

 Is [math]Ca^{19+}[/math] one lectron atom?

 There is typographical error in the above question.

Please read ' Is [math]Ca^{19+}[/math] one electron atom? '

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Moderator Note

You've been told before that you need to show what you've done to try and solve the problem.

Posting the answer without showing work, as you have done before, is not an acceptable approach.

 

 

"Is Ca19+ one electron atom?" is pretty straightforward. How would you figure this out?