Pauling's equation for determining the electronegativity of an element, is (`X_(A), X_(B)` are electronegativity value of elements A and B respectively, `Delta` represents the polarity of A-B bond.)

Options

A. `X_(A)-X_(B)=0.208 sqrt(Delta)`
B. `X_(A)+X_(B)=0.208 sqrt(Delta)`
C. `X_(A)-X_(B)=0.0208 Delta^(2)`
D. `X_(A)-X_(B)=sqrt(Delta)`

Explanation

Pauling's equation
`X_(A)-X_(B)=0.208 sqrt(Delta)`
where, `X_(A)` and `X_(B)` are electronegativity values of elements
A and B and `Delta = E_(A-B)-sqrt(E_(A-A)xxE_(B-B))`
Here, `E_(A-B),E_(A-A)` and `E_(B-B)` are the bond energies of the molecules `AB, A_(2)` and `B_(2)` respectively.