Why is this wrong?
*give me Reasons other than that 4s Comes before 3d*
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according to law.
the orbital who is have the lower value of (n+l) the electron first full them.
as 3d have (3+2)=5
4s have (4+0)=4
that is why 4S comes before the 3d.
the orbital who is have the lower value of (n+l) the electron first full them.
as 3d have (3+2)=5
4s have (4+0)=4
that is why 4S comes before the 3d.
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