Question

Write the formula for calculation of percentage ionic character.

Answer 1

Hint : For the calculation of percentage of ionic character, first we need to calculate the dipole moment of the molecule. Dipole moment is the measure of polarity of two atoms in a molecule. Higher the electronegativity difference between the atoms, more will be the ionic character and vice versa.

Complete Step By Step Answer:
For calculating the percentage of ionic character, we need to start off by calculating the dipole moment of the molecule using the formula:
 $ \mu = q \times r $
Where, $ \mu = $ dipole moment,
 $ q = $ Charge of electron
 $ r = $ Distance between them.
After calculating the dipole moment, we need to convert the $ cm $ into standard unit of dipole moment $ (D) $ i.e. Debye. $ 1D = 3.335 \times {10^{ - 30}}cm $ .
As we are done converting $ cm $ into standard units, we can now use the formula of percentage ionic character to find out the percentage ionic character.
We know, the formula of percentage ionic character is:
 $ \dfrac{{experimental\;value}}{{theoretical\;value}} \times 100 $
After substituting the experimental value and theoretical value, we will get a percentage ionic character.
Therefore, the formula of percentage ionic character is:
 $ \dfrac{{experimental\;value}}{{theoretical\;value}} \times 100 $

Note :
For calculating the percentage of ionic character, we need to remember the standard unit of dipole moment or $ 1D $ i.e. $ 3.335 \times {10^{ - 30}} $ . And for dipole moment, we need to remember the charge of an electron i.e. $ 1.6 \times {10^{ - 19}} $ . We can also find out percentage ionic character by using the formula $ \dfrac{q}{e} \times 100 $ ,
Where $ q $ is the charge of the given electron and $ e $ is the charge of one electron.