how can i calculate screening constants of outermost electron? ex: Cl

Question

aaronq · Answer

"For electrons in an s or p orbital with n > 1, the screening constant is given by $s = 1.00 N_2 + 0.85 N_1 + 0.35 N_0$ $N_0$ represents the number of other electrons in the same shell, $N_1$ represents the number of electrons in the next smaller shell ( n - 1 ), and $N_2$ is the number of electrons in other smaller shells (n - 2 and smaller )." http://www.chm.davidson.edu/vce/atomicorbitals/ZeffSize.html

mew55 · Answer

thank u for the information but i still don't understand how once i get the electron configuration of Cl then i apply it to the equation. i just want to know how to put it in the equation :(

rushwr · Answer

Here I have a link for you. Just go and see. http://www.wikihow.com/Determine-Screening-Constant-and-Effective-Nuclear-Charge

aaronq · Answer

So you have Cl, which has the configuration $1s^22s^22p^63s^23p^5$.

Electrons on the same shell ($N_0$), $3s^3p^4$

Electrons in the shell below ($N_1$), $2s^22p^6$

Electrons in two shells below ($N_2$), $1s^2$

$s = 1.00 N_2 + 0.85 N_1 + 0.35 N_0=1.00*2+0.85*8+0.35*6$

aaronq · Answer

electrons in the same shell were supposed to be $3s^2$ not $3s^3$ lol