Gen CHem question Destroyer

[KyoPhan]

#249 on 2011 edition.

Which set of quantum numbers best describe a valence electron in Germanium?
a) 4,0,0,1/2
b) 4,1,1,1/2
c) 4,2,-1,1/2
d) 4,2,3,-1/2
e) 3,1,1,1/2

Answer is B. My question is aren't there several valence electrons? Wouldn't A also be valid quantum number for the valence electron in the 4s?

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[PooyaH]

The valence electrons of Germanium are in p orbital so L has to be 1.

 

[KyoPhan]

The valence electrons of Germanium are in p orbital so L has to be 1.

But like if I asked how many valence electron does germanium have, wouldn't you say 4? So wouldn't A be valid as well? I do understand that they are using the electron in the p orbital. I'm just saying isn't the electron in the 4s also considered a valence electron?

 

[wired202808]

But like if I asked how many valence electron does germanium have, wouldn't you say 4? So wouldn't A be valid as well? I do understand that they are using the electron in the p orbital. I'm just saying isn't the electron in the 4s also considered a valence electron?

this was brought up and debated bout in the other thread since Ge has a 4s^2 4p^2 valence electron, but i think the best way to look at it is to see where it lands on the periodic table and then state that as l. meaning if it lands in the P section then its l value = 1

thats the easiest way to look at it plus it should always be correct, you can never assign more than one L value, nor would I think it would be O when its sitting in the P shell.

Hope this helps Kyo.

 

[FROGGBUSTER]

Yes, A is valid. This has been asked several times on the forum, it needs to be corrected in the Destroyer.

 

[KyoPhan]

Yes, A is valid. This has been asked several times on the forum, it needs to be corrected in the Destroyer.

Good to know. Thanks.