Sig Figs for electron shells

Moderators: Chem_Mod, Chem_Admin

TJ Lai 2H
Posts: 97
Joined: Wed Sep 30, 2020 9:38 pm

Sig Figs for electron shells

Postby TJ Lai 2H » Fri Oct 30, 2020 7:11 am

For electron shells, can we assume that each quantity has "infinite" sig figs (e.g. 2.000000...) because we know that shells can only be whole numbers? So in a problem, we should base the number of sig figs off of the value we are given for the wavelength/ frequency etc.?

Faaizah Arshad 1H
Posts: 174
Joined: Wed Sep 30, 2020 10:01 pm
Been upvoted: 2 times

Re: Sig Figs for electron shells

Postby Faaizah Arshad 1H » Fri Oct 30, 2020 8:07 am

I suppose that we can think of it that way. If the problem provided a value for frequency or wavelength, then you would base your significant figures on that.

Tanya Nguyen 1B
Posts: 100
Joined: Wed Sep 30, 2020 9:33 pm

Re: Sig Figs for electron shells

Postby Tanya Nguyen 1B » Fri Oct 30, 2020 11:12 am

Yes I agree with the previous post, you should base your sig figs off of the wavelength/frequency given in the question since electron shells can only have whole numbers.

Victor Qiu 1C
Posts: 106
Joined: Wed Sep 30, 2020 9:59 pm
Been upvoted: 2 times

Re: Sig Figs for electron shells

Postby Victor Qiu 1C » Sun Nov 01, 2020 5:09 am

I think you can just add "Because electron shells are integers, the number is ...".

rita_debbaneh2G
Posts: 103
Joined: Wed Sep 30, 2020 9:57 pm

Re: Sig Figs for electron shells

Postby rita_debbaneh2G » Sun Nov 08, 2020 10:21 pm

I think you have it down right: in general, I use other values in my calculations to determine sig figs. And I remember that one of the sig fig rules on the 14A website said that integers aren't counted for sig figs. So I wouldn't really worry about this issue. Use wavelength/frequency instead.


Return to “Significant Figures”

Who is online

Users browsing this forum: No registered users and 4 guests