Sub shells 4s and 3d Watch

Toasticide
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So out of the following which gain 4s1 then fill 3d before getting 4s2:
1. Just Cu and Cr
2. All d-block elements
3. all transition metals

i fear its 2 or 3 and the exam will trick me by giving a non-transition d block metal. (vanadium i believe? havent learnt that far yet)
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charco
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(Original post by Toasticide)
So out of the following which gain 4s1 then fill 3d before getting 4s2:
1. Just Cu and Cr
2. All d-block elements
3. all transition metals

i fear its 2 or 3 and the exam will trick me by giving a non-transition d block metal. (vanadium i believe? havent learnt that far yet)
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Toasticide
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(Original post by charco)
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ah thanks
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Pigster
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(Original post by charco)
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Can. Of. Worms.
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username986184
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(Original post by Toasticide)
So out of the following which gain 4s1 then fill 3d before getting 4s2:
1. Just Cu and Cr
2. All d-block elements
3. all transition metals

i fear its 2 or 3 and the exam will trick me by giving a non-transition d block metal. (vanadium i believe? havent learnt that far yet)

Here's the truth. Read then forget it.

http://ericscerri.blogspot.co.uk/201...u-to-find.html
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