00:01
In this question, we've been asked to identify the lichens and then identify the coordination number and the oxidation number of the central atom or ion.
00:10
So looking at the first compound, we are looking at c .o.
00:16
Nh3, 2, n02, 4, with an overall charge of negative 1.
00:24
So looking at this, the lichans here, these are going to be equal to the nh3, the ammonia.
00:31
Is delicate and we also have n -o -2 so looking at this the coordination number it is going to be equal to 6 because we've got a total of two ammonia ammoneas or ammonia molecules plus 4 n -o2 molecules that are bonded to the central co atom so this gives us 2 plus 4 which gives us a total of 6 therefore the coordination number this is going to be equal to 6 then as for the oxidation number of the central atom which is cobald ammonia and nitrogen dioxide they are both neutral but we have an overall charge of negative 1 so what this means is the charge on the cobalt central atom it is equal to negative 1 and then looking at the next compound our ligans these are going to be nh3 and the chloride.
01:46
So looking at this, the coordination number, this is going to be six since we've got five plus one, making this equal to six.
01:55
So when we look at ammonia, it has no charge.
01:59
And if we look at chlorine, when we look at chlorine, this right here, it has an overall charge of negative.
02:12
This is a chloride ion.
02:15
So what would have is an overall charge of positive 2...