A. 1
B. 2
C. 3
D. 4
E. 11
Correct Answer:
Option C – 3
How many principal electronic shells has an atom whose electronic configuration is shown below? 1s² 2s² 2p6 3s¹.
![Which of the following elements has the electronic configuration:1s² 2s² 2p6 3s² 3p¹? [11Na, 13Al, 14N,16S]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "Which of the following elements has the electronic configuration:1s² 2s² 2p6 3s² 3p¹? [11Na, 13Al, 14N,16S]")
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