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Size:  17.6 KBCan someone please explain to me why electrons are being removed from the 6s orbital of thallium in this question before the 5d orbital electrona.
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    (Original post by Jennifer50)
    Name:  image.jpeg
Views: 27
Size:  17.6 KBCan someone please explain to me why electrons are being removed from the 6s orbital of thallium in this question before the 5d orbital electrona.
    Thanks
    I think the 6s orbitals are slightly higher energy that 5d so they fill and empty first. Whether this is a rule that you can apply to any element, I don't know.
    To be honest I don't think you really have to know why you just have to parrot learn it really.
 
 
 
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