00:01
The ionization energy of li is equals to 520 .2 kilojoule per mole and the electron affinity of h is equal to 72 .8 kilojoules per mole.
00:29
You have to find first the separation distance in lih at which the column potential energy column potential energy equals the energy caused by removing an electron from li and adding it to h.
01:14
For b part we have to measure the fractional ionic character of lih where given value of measured electric dipole moment electric dipole moment is to 10 to the power minus 29 column meter.
01:58
For c, instead of removing the electron from li and added to h, we could regard the formation of lih as occurring by removing the electron from from h and add it to li where given the electron affinity equals to 59 .6 kilojoules per mole then why don't we consider this as a formation process? so for first part the energy difference from the data is given by 5 .39 .39 electron volt minus 0 .81 electron volt which is 4 .58 electron volts.
03:06
Now the separation is given by r is equals to minus k e square by u where k is the constant, e is the charge of electron u is the potential energy.
03:26
Here, k .e square has the magnitude 1 .44 electron volt into nanometer.
03:35
Now here the potential difference, u is equals to minus of energy difference, which is minus 4 .58 electron volt.
03:45
Now substituting the value, r equals to 1 .44 divided by minus of 4 .58 is equals to 0 .314 nanometer...