00:01
First of all, let's have a look what all is given in the problem.
00:04
Given are, there are two problems that are given.
00:06
In the first one, the structure of ethene is given.
00:09
And in the second one, the structure of cytosine is given.
00:13
A pyrimidine base is given.
00:15
What we have to do is, basically we need to tell about the molecular geometry around the central atom in both the cases.
00:22
So, let's try to look at these structures and let's try to identify the molecular geometry around the central atom.
00:28
So, the structure of ethene looks like this.
00:31
Here we can see that c double bond c is present and the formula is c2h4.
00:37
We can see that let's number it as c1c2.
00:40
So, for c1 there is one double bond and two single bonds that means it must be trigonal planar and similar is the case with c2 also because there is one single one double bond and two single bonds.
00:53
So, it is also trigonal planar in nature.
00:56
Next we have is a cytosine molecule.
00:59
Let's try to draw the structure of cytosine molecule.
01:02
So, this is how the structure of cytosine molecule looks like...