A. 3
B. 9
C. 10
D. 18
E. 32
Correct Answer:
Option D = 18
The maximum number of electrons that can occupy the shell having a principal quantum number of 3 is?
![What volume will 0.5 g of H2 occupy at s.t.p? [H = 1; 1 mole of a gas occupy 22.4 dm3 at s.t.p]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "What volume will 0.5 g of H2 occupy at s.t.p? [H = 1; 1 mole of a gas occupy 22.4 dm3 at s.t.p]")
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