for vanadium why are the 3d electrons the same value(its in the n-1 row) according to your table the 3d electron should contribute 1 each to the S value so zeff=23 - (.35+3*1+8*.85+10*1)=23 - 20.15=2.85 (for the 4s electron)
We look at the shells (n) not the sub shells (s,p,d). 3s, 3p and 3d have the same n, 3. The electron being evaluated is in the 4th shell, 4-1=3 so anything in the third shell is considered to be applied to the n-1 category. That’s how I understood it.
@craisincrazy4295 OK that's fine to look at it that way, but the table as written is clearly in contradiction, as it lists the d orbital n-1 electrons as contributing 1 shielding
I had exactly the same question. I thought my textbook had a mistake in it because a demonstrated practice problem in it had the same contradiction, which was never explained. This video still hasn't clarified the contradiction
@@sukitrebek I think that what is going on is that the column on the left indicates what electron you are considering or "taking out" as he says, and not indicating a shielding electron
Not on youtube but I do have a free Physical Chemistry (Thermodynamics) playlist on my website: www.chadsprep.com/chads-elementary-physical-chemistry-videos/ Hope this helps and Happy Studying!
Thank you so much for your detailed explanation 🙌🏾
You're very welcome.
for vanadium why are the 3d electrons the same value(its in the n-1 row) according to your table the 3d electron should contribute 1 each to the S value so zeff=23 - (.35+3*1+8*.85+10*1)=23 - 20.15=2.85 (for the 4s electron)
We look at the shells (n) not the sub shells (s,p,d). 3s, 3p and 3d have the same n, 3. The electron being evaluated is in the 4th shell, 4-1=3 so anything in the third shell is considered to be applied to the n-1 category. That’s how I understood it.
@craisincrazy4295 OK that's fine to look at it that way, but the table as written is clearly in contradiction, as it lists the d orbital n-1 electrons as contributing 1 shielding
I had exactly the same question. I thought my textbook had a mistake in it because a demonstrated practice problem in it had the same contradiction, which was never explained. This video still hasn't clarified the contradiction
@@sukitrebek I think that what is going on is that the column on the left indicates what electron you are considering or "taking out" as he says, and not indicating a shielding electron
Wow ,thanks ! This video was very helpful
Glad to hear that!
Hello brother, you have made mistake in the values of d subshell e of 3 shell. The value should be 20.15
¿Tienes videos sobre fisicoquímica?
Not on youtube but I do have a free Physical Chemistry (Thermodynamics) playlist on my website: www.chadsprep.com/chads-elementary-physical-chemistry-videos/
Hope this helps and Happy Studying!
@@ChadsPrep TYSM, Chad, you're the Best 👌🏽
@@QFBPLR 👍 👍 👍