What are all of the irregular electron configurations?

Question

anonymous · Answer

Excluding the inner transition elements, many of which are weird: Cr,Cu,Nb,Mo,Ru,Rh,Pd,Ag,Pt and Au.

anonymous · Answer

Do you know how these could be done?

hba · Answer

Like how we can find their electronic configration ?

anonymous · Answer

Yep.. does it have to be memorized, or can you tell by looking at the chart?

hba · Answer

Yes we have to learn them up  but they are tricks to learn them :)

Gimme a min lemme draw and show you how to learn :D

brb

anonymous · Answer

Ok, thanks

hba · Answer

I am really sorry but it is hard to show here.

Come  on twiddla.

anonymous · Answer

Im on it right now

anonymous · Answer

http://www.twiddla.com/1052351

hba · Answer

1s

2s 2p 

3s 3p 3d 3f

4s 4p 4d 4f

5s 5p 5d 5f 

6s 6p 6d 6f


We actually write them up like this and make lines

anonymous · Answer

They can all be rationalized by the unusual stability of a half- or completely-filled d subshell.  That results in a predictable transfer of an s electron to the d subshell to make a half- or completely-filled subshell one element early for Cr, Cu, Mo, Ag and Au.

The others (Nb,Ru,Rh,Pd,Pt) are just freaks, and you just have to remember them.  W is also strange in *not* being strange.  Like Cr and Mo, you'd *think* it would be d5,s1 but it's d4,s2.  So W is also a freak.

anonymous · Answer

@Carl_Pham Thank you so much!