quick question on electron config

[spoog74]

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the elctron config for the transition metals such as Mo, Cr, Mn, Ag, etc etc all have "exceptions" ..


Now my question is;


For the electron configuration of Mn+ i thought it would have been 4s2 3d 4 but the answer showed 4s1 3d 5 .... But why would that happen if there are only certain exceptions? Does this account for ALL electron configurations that can be "half" full or full?

Someone please help clear my mind.

Thanks + gd bless

 

[jas1317]

Mn+ is equivalent to Cr because it lost one electron. So Cr is happier with a half filled d shell

 

[spoog74]

Mn+ is equivalent to Cr because it lost one electron. So Cr is happier with a half filled d shell

ahh thats why. Beauty , thanks

 

[gtk06]

the exception means that these elements steal electrons from the 4s orbital in order to be half ful. they are the only elements that are capable of doing that. makes sense? hope it does!