help with chem?

Write the condensed electron configuration for each atom or ion. (Be careful to identify the exceptions to GS electron configuration!) 

Ga 

Cu 


Cd2+

hcbiochem2021-04-07T15:48:17Z

Fe: [Ar] 3d6 4s2 
Ga: [Ar] 3d10 4s2 4p1
Cu: [Ar] 3d10 4s1 (This is an exception which fills the 3d subshell)
Cd2+:  [Ar] 3d10