Chromium 2+ ion uses only unfilled d-orbitals to form 6 dative bonds?

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Is any part of the picture text wrong?
1722686588368.png

I find the one (4s) + 3(4p) + 2(d) incorrect according to my knowledge.
 
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Start by finding the electronic configuration of a chromium atom - which orbitals are occupied.
Then move on to the configuration of a Cr 2+ ion.
Then which orbitals are empty.
 
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