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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: dn320308 on September 29, 2015, 07:58:31 PM

Title: Full electron configuration of Sb
Post by: dn320308 on September 29, 2015, 07:58:31 PM

I am doing an assignment question where it is asking for the full electron configuration of Sb. I have already done the abbreviated electron configuration, which is [Kr] 4d10 5s2 5p3. I do not understand why this is, because according to my atomic orbital chart, I thought it should be [Kr] 5s2 4d10 5p3. Is Sb some kind of exception?

For the full electron configuration, I tried 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 4d10 5s2 5p3, and it was incorrect. Should 3d10 come before 4s2? What exception does Sb follow?

Thanks in advance.

Title: Re: Full electron configuration of Sb
Post by: mjc123 on September 30, 2015, 06:50:12 AM

Should be ....5s² 4d¹⁰ 5p³.

Title: Re: Full electron configuration of Sb
Post by: Enthalpy on September 30, 2015, 12:49:05 PM

And for [Kr], this site gives 3d¹⁰ before 4s² and 4p⁶
http://www.webelements.com/krypton/