ionic character

[Karyn Nguyen 1K]

why does NaBr have a greater ionic character than NaI?

[Dennisse Diaz 1D]

Br has a stronger ionic character than iodine, therefore NaBr is stronger. You can tell apart the stronger ionization by going up and right in the periodic table.

[Karyn Nguyen 1K]

I thought the greater difference in electronegativity corresponds with a greater ionic character? NaBr has a lower difference in electronegativity than NaI doesn't it?

[Andrew Evans - 1G]

No NaBr definitely has more ionic character. Br is above I on the periodic table and therefore Br is more electronegative and there is a greater difference between Na and Br than there is between Na and I.

[Rogelio Bazan 1D]

The ionic character which is just Ionic Bonding which to my understanding corresponds to periodic trends in which a bond between two molecules in which a large electronegativity difference exists between the two atoms would cause them to be more electronegative. I hope this helps with any confusion.

[Karyn Nguyen 1K]

I'm just a little confused because this doesn't apply when comparing MgCl2 and CaCl2 because CaCl2 has a greater ionic character.

[Andrew Evans - 1G]

That is because Ca has a lower electronegativity than Mg, producing a greater electronegativity difference between that metal and the Cl.

[Jocelyn1B]

What is the large electronegativity difference?

[Rogelio Bazan 1D]

By large electronegativity difference we are referring to the periodic trends on the periodic table. Electronegativity increases as you move from left to right across a period on the periodic table. So the top right-hand corner on the periodic table where Florine is at will be the most electronegative.

[megangeorge-1K]

what is the difference between something being ionic or dipole?

[Megan Phan 1K]

what is the difference between something being ionic or dipole?

I believe the difference between ionic and dipole is that ionic is a force between an ion and polar molecule, while dipole is between a hydrogen bond that is slightly positive on one molecule and slightly negative on another.

[Sollie1G]

what is the difference between something being ionic or dipole?

I found this explanation:

"An ion-dipole force is a force between an ion and a polar molecule. A hydrogen bond is a dipole-dipole force and is an attraction between a slightly positive hydrogen on one molecule and a slightly negative atom on another molecule."