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I believe 4s2 is the distinguishing (last) electron
There are no unpaired electrons in strontium.
A fluorine atom has seven unshared electrons in its outer most shell (valence shell).
There are 3 unpaired electrons in an isolated nitrogen atom, the nitrogen molecule has none.
thee are exactly 10 that is a difficult question but yes it is 10
1 Electronic configuration of scandium: [Ar]3d1.4s2.
A silicon atom has 4 unpaired electrons.
An atom of antimony in its ground state has 3 unpaired electrons.
2.
Any in the neutral atom.
There are no unpaired electrons in an unexcited neutral mercury atom; its outer shell contains only two s electrons that are paired, as are all the electrons in the filled inner shells of the atom.
54
That would be 0. The ground state of every element except for Hydrogen is 1s2 which has no unpaired electrons. (only valence electrons have the ability to be unpaired). Full configuation of Fe would be: 1s2 2s2 2p6 3s2 3p6 4s2 3d6 WWWWWWWWWRRRRRRROOOOOOONNNNNNGGGGGGG!!!!!!!
There are 0 unpaired electrons which would make it diamagnetic
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