00:01
So in this problem, we are estimating the bond length between two atoms, say atoms a and atom b, and we want to calculate what the bond length is between these two atoms.
00:14
Generally, the rule of thumb is we can first go to table 10 .2 and see if the table lists out the bond length for these particular atoms.
00:22
However, if it doesn't, one way to estimate the bond length is to look at the bond of atom a to atom a and the bond length of adam b to atom b bond length.
00:35
And we can estimate, use these values as an estimate.
00:39
So we'll take one half of the a to a bond link plus half of the b to b bond link.
00:54
And this will give us an estimate of the a, b bond link.
01:02
And we're going to use this principle throughout this problem.
01:07
Okay, so in our first problem, we want to look at the bond length between icl.
01:14
From table 10 .2, the bond length of this particular pair is not listed.
01:19
However, we do know that the bond length of an i -i bond is 266 pomeeters, and the bond length of cl to cl is 199 picometers.
01:32
Following this rule of thumb, we can then calculate the bond length of i to cl, one half of 266 picometers plus one half of 199 picometers.
01:47
And this gives us an average bond length of 232 .5 picometers...