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Ionic character

Posted: Wed Nov 28, 2018 10:23 pm
by melissa_dis4K
Just to clarify, when looking at the greater ionic character, the difference between the electronegativity of the two atoms, do the number of atoms, the subscripts make a difference? For example, comparing the molecules H (subscript 2)S and HCl. I know that HCl has the greater ionic character, but does the subscript of 2 matter on the H2S or do we just compare the electronegativity of the atoms?

Re: Ionic character

Posted: Wed Nov 28, 2018 10:43 pm
by Te Jung Yang 4K
I would think it is just the electronegativity. In your example, the bonds in H2S are the same, namely H - S bond. Since they are the same, they do not add to the ionic character.

Re: Ionic character

Posted: Thu Nov 29, 2018 10:14 am
by Stevin1H
For determining the ionic character, we only look at the electronegativity for the individual atom. So for H2S, we would only consider the electronegativity of a single H and a single S atom to determine the ionic character of the compound.