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.