00:01
Question is six for the octahedro complexes below, determine how many d electrons are associated with the central metal hyden.
00:09
Use the energy level diagram in kinball and so data sheet to draw the electron configuration, determine number of pure electron in each complex and predict whether the complex is diamagnetic or paramagnetic.
00:20
So we have six complexes.
00:22
The first one is f .e.
00:25
Cl6, 3 minus, b will be, and the total that is high spin okay this i spin complex the next one is uh f e um n o2 6 and this is 3 minus and they told us that this is a low spin complex okay then we have um molybdenum um humming complex that 6 2 plus and we tell that this is a weak field ligand field or weak ligand field or with ligand out of this point now we have a cobalts aqua complex with two that is a strong ligand field and i'll explain what each of this means okay and then we have a cadmium okay cadmium aqua complex and it has the sulphate counter hyion information about that and then we have a zinc half wall complex okay and this is those two no information about it as well let's just go ahead and get started so the first thing is the d electron okay so this is ion 3 i can see minus 3 right chloride is minus 6 so minus 3 plus 6 is going to be plus 3 so this is higher 3 okay fe3 blocks this f83 plus and that will be a d5 configuration right you lost three electrons and you have a d5 configuration and then the number of ampere electron is going to be five ampere electrons right so it's going to be five umpire electrons and this is going to be paramagnetic okay because call it para misperate paramagnetic.
02:59
And that is why they totalize an eye spin complex.
03:02
So if you have ice spin, then we have more pure electrons.
03:09
Next one is iron nitral complex.
03:13
This is a low spin complex and that's because this ligand is a strong field ligand.
03:20
So the gap between the, uh, the t2g and the eg orbiter is quite wide and hyon here is what's charge so this is minus 3 and this is minus 1 and this minus 1 so that's plus 3 so ion is also fe3 here this is d5 but because you have low spin which means that this is a strong feeling then so you have a t2g and then you have an eg set above the t2g.
04:04
So in t2g we have three orbiter.
04:09
So you have to fill those orbiter singly first with five electrons.
04:13
So we have three electrons in the total field into the obituators.
04:18
So then you have each of the orbiter singly filled.
04:21
Then you are left with two electrons because you have five on p .m.
04:24
So you have to put those other two electrons.
04:27
And then you have one on peter electrons and it's also paramagnetic because of that.
04:37
So then you come here, like you look at molybdenum complex with ammonia and it's a weak for ligand so molybidinum is plus two because ammonia is a weak, ammonia is a neutral ligand.
04:55
So when you look at the periodic table, so molybdenum, let's check.
05:05
Polypidium is in one group.
05:17
Moliptinum is in group 6, okay? so it's in the same group with chromium.
05:22
So scandinium, we have d1, d2, titanium, vanadium will be d3, chromium will be d4.
05:30
Okay, that's 4s2, d4.
05:33
So in this case, it's going to be 5s2, 4d4...