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Consider the hypothetical situation wher...

Consider the hypothetical situation where the azimuthal quantum number , l,takes values 0, 1, 2, …….n+1 , where n is the principal quantum number . Then the element with atomic number :

A

9 is the first alkali metal

B

8 is the first noble gas

C

13 has a half - filled valence subshell

D

6 has a 2p valence subshell

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