Can anyone suggest how to calculate electronegativity on each element in a bond like Ti - O - P using Sanderson or Pauling procedure? I know how to calculate for two elements (and all standard text books and websites have discussed the calculations in case of two elements ex. Na - F or H - Cl etc). But in case of Ti - O - P, I have calculated partial charges on titanium and oxygen, but since the same corner oxygen is bond with phosphorus how to calculate the net charge on oxygen and resultant charge on phosphorus? Pls guide me or direct me to a correct source. Thanks.