00:01
Okay, so for the molecule is number 83, if we're going to figure out what their geometries and bond angles are.
00:09
For ccl4, you've got four bonded groups and no lone pairs of electrons.
00:14
So this is going to be tetrahedral.
00:17
And tetrahedral has a bond angle of 109 .5.
00:22
And then ncl3 has got three bonded groups and one lone pair of electrons on the central atom.
00:32
Trigonal pyramidal, which has a bond angle that's less than 109 .5.
00:39
And then sccl2 has got two bonded groups and two lone pairs of electrons on the central atoms.
00:45
So this is bent with a bond angle at less than 109 .5.
00:48
And then icl is just a bond.
00:50
Like it's just like i bonded to cl.
00:54
It's just linear.
00:55
That's 180 degrees.
00:57
Then if you're looking at number 89, n02 negative 1 is two bonded groups, one lone pair of electrons on the central atom.
01:05
So this is bent.
01:06
The bond angle is less than 120 degrees...
