Question

The value of Zeff for a valence electron in an atom of silicon is?

Answer 1

eff is in the subscript of z

Answer 2

http://answers.yahoo.com/question/index?qid=20101215073052AAvicPr
that should help.

Answer 3

huh

Answer 4

I searched your question on google.

Answer 5

doesnt look like that person and I asked the same question

Answer 6

Is this chemistry?

Answer 7

yea

Answer 8

It would help me better understand you question if you rephrase it.

Answer 9

one sec

Answer 10

Perhaps take a snapshot of the problem and upload it as a "Attach File" (:

Answer 11

Zeff is the effective nuclear charge. It is given by:\[Z_{eff} = Z - \S\]Where Z is the # of protons, S is the # of non-valence electrons. Silicon has 14 protons; its electron configuration is [Ne] 3s2 3p2. Its non-valence electrons is in the n = 1 and n =2 shells. There are 2 electrons in n = 1 and 8 in n = 2, so there are a total of 10 non-valence electron.\[Z_{eff} = 14 - 10 = 4\]

Answer 12

I think that file gave me a virus :( lol ever since I downloaded it..my computer is a snail all of a sudden :P but ehh might be just internet connection :P

Answer 13

:O might wanna get your computer scanned (but don't download those scanning programs from online, they screwd my computer one time, lol).

Answer 14

:P lmao well thanks to this site if I need technical computer help I'll head over to the Computer section! XD I use Avast and Malwarebytes along with SuperAnti Spyware :P

Answer 15

What's the best anti-virus software? I thought it was Kaspersky.

Answer 16

did you really get a virus from the file i posted?

Answer 17

hey rogue is the non valence electrons for chlorine 7?

Answer 18

Chlorine has 7 valence electrons in the 2nd shell; it has 2 non valence in the 1st shell.

Answer 19

so the total is 9 and the zeff would be 17-9 =11?

Answer 20

9 protons, 2 non valence.
Zeff = 9 - 2 = 7

Answer 21

Yes. and Rogue nah lol Bitdefender is the best if you want to pay but Avast is the best free one and along with malwarebytes and superantispyware its just as good as bitdefender which is the top of all anti viruses. Kaspersky is just average and the fact that you pay for it is not worth it :P

Answer 22

wait what does it mean by Determine the effective nuclear charge for a valence electron in an atom of chlorine.

Answer 23

I think that's all they're looking for in this question, but you will slightly trickier questions when they might ask you stuff like the Zeff for n = 2 when the element has up to n = 4.

Answer 24

can you answer this one then

Determine the effective nuclear charge for a valence electron in an atom of chlorine.

Answer 25

what is this asking

Answer 26

It saying how much charge do you think that a Valence electron has.

Answer 27

Asking*

Answer 28

Like what is the most effective charge in one atom of Chlorine (:

Answer 29

how do you go about determining that

Answer 30

Its the same question as the silicon one, except its for chlorine.

Answer 31

Or are you asking about the trickier one I was talking about?