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**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.

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