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4s will fill first because it is at a lower energy level than the 3d level.

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Q: Which orbital should fill first 4s or 3d orbital?
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The first transition series represents the filling of the orbital?

the 3d orbital


4s orbital is filled before 3d orbital?

The 4s orbital falls in a slightly lower energy level than the 3d orbital when it is empty so it will fill with electrons first, but when it is full of electrons it rises to be above the 3d one so that it will lose electrons first as well.


The first transition series represents the filling of the?

3d orbital.


Why does the 4s orbital fills before the 3d orbital?

the 4s orbital is lower in energy than the 3d orbitals


The first transition series represents what?

The 3d orbital! ...Sexy thang...


How would the 4d orbitals differ from the 3d orbitals?

The 4d orbital would be the same shape as the 3d orbital, but just a larger size. Also it would have more nodes than he 3d orbital.


Why 4S orbital is filled before 3d orbital during writing electronic configuration Explain with the help of n l rule?

4s-orbital will be filled prior to 3d-orbital.ORBITALnl(n+l)4s404+0 = 43d323+2 = 5Since 4s-orbital has least value of (n+l), therefore ,it will occupy electrons before3d-orbital.The order of increasing of energy of orbitals can be calc. from(n+l) rule or 'Bohr bury rule' According to this rule, the value of n+l is the energy of the orbital and such on orbital will be filled up first. e.g. 4s orbital having lower value of(n+l) has lower energy than 3d orbital and hence 4s orbital is filled up first. For 4s orbital, n+l=4+0=4 For 3d orbital, n+l=3+2=5,therefore 4s orbital will be filled first.


What is the atomic orbital after 4s?

3d


What atom is represented in the following orbital diagram 1s2s2p?

The next highest energy electron orbital after 3p is the 4s orbital, after which comes the 3d and then 4p orbitals.


What is the lowest energy level that can have a d orbital?

3d


Is that 4s or 3d orbital to which an excited electron from 3p would first go?

4s, as it is lower in energy.. s then d


Why do electrons enter the 4s orbital before entering the 3d orbital?

because its energy level is lower