Here is one:

Select the correct electron configuration for Vanadium. (Atomic Number 23)

1s 2 2s 6 2p 3 3s 2 3p 4 4s 2 3d 5
1s 2 2s 2 2p 6 3s 2 3p 8 4s 2 3d 1
1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 3
1s 2 2s 2 2p 5 3s 2 3p 7 4s 1 3d 4

Question

Here is one:

Select the correct electron configuration for Vanadium. (Atomic Number 23)

1s 2 2s 6 2p 3 3s 2 3p 4 4s 2 3d 5
1s 2 2s 2 2p 6 3s 2 3p 8 4s 2 3d 1
1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 3
1s 2 2s 2 2p 5 3s 2 3p 7 4s 1 3d 4

anonymous · Answer

I have tried to get this.

anonymous · Answer

I tried the first one and it is wrong.

anonymous · Answer

all S orbitals can have a max of 2 electrons, all p orbitals can have a maximum of 6 electrons, knowing Vanadium is 23 (23 electrons), there is only one choice among those 4 that fits the 3 things above

anonymous · Answer

the third?

anonymous · Answer

thats right, btw d can have 10 electrons max

anonymous · Answer

Hello?

anonymous · Answer

3rd one is correct

espex · Answer

1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 3