Question 2.49

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Alma Cruz 1A
Posts: 21
Joined: Fri Jun 23, 2017 11:40 am

Question 2.49

Postby Alma Cruz 1A » Sun Jul 09, 2017 9:01 pm

I understand part a, b, and c of this question, but can someone please explain part d) W. Why the number of valence electrons for W is 20?

Kyle Sheu 1C
Posts: 87
Joined: Fri Jun 23, 2017 11:39 am

Re: Question 2.49

Postby Kyle Sheu 1C » Sun Jul 09, 2017 11:47 pm

Row 6 of the periodic table includes elements from the f block, so electrons for tungsten come from the f orbital as well.
When we consider both the d-electrons and f-electrons, we have:
2 e- from the s orbital (6s^2)
14 e- from the f orbital (4f^14)
4 e- from the d orbital (5f^4)
for a total of 20.

Alma Cruz 1A
Posts: 21
Joined: Fri Jun 23, 2017 11:40 am

Re: Question 2.49

Postby Alma Cruz 1A » Tue Jul 11, 2017 8:41 am

Okay, thank you!


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