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Determining ionic character vs covalent

Posted: Sun Nov 11, 2018 12:49 pm
by Aj1156
To calculate the difference in electro negativity such as PCl3 would you simply do (electronegativity of P) - (electronegstivity of Cl) or would you do (electronegativity of P) - (3 x electronegstivity of Cl)

Re: Determining ionic character vs covalent

Posted: Sun Nov 11, 2018 1:05 pm
by JulieAljamal1E
I believe you subtract the electronegativity of Phosphorus from that of Chlorine since chlorine is more electronegative. Thus it would be 3.16-2.19=0.97 electronegativity difference.

Re: Determining ionic character vs covalent

Posted: Sun Nov 11, 2018 2:01 pm
by 905096106
You calculate the individual electronegativities of the p-cl bond and then add them together.

Re: Determining ionic character vs covalent

Posted: Sun Nov 11, 2018 3:35 pm
by cara_cavarretta_3F
On a related note, do you know if we will be responsible for knowing exact electronegativity values or should we just know the general trend?