For a Sc atom in ground electronic state:
1. how many electrons are there in 4s orbitals?
2. how many electrons are there in 3d orbitals?
3. how many electrons are there in 4p orbitals?
4. how many unpaired electrons are there?
5. to what block does Sc belong to in the periodic table (s, p, d, f)?

asked by S
  1. Why are you having trouble with this. You can look up the answers is many places, including your text/notes. Sc is #21.
    1s2 2s2 2p6 3s2 3p6 3d1 4s2

    posted by DrBob222

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