Ionic character

Moderators: Chem_Mod, Chem_Admin

taiyeojeikere-3C
Posts: 30
Joined: Fri Sep 28, 2018 12:26 am

Ionic character

Postby taiyeojeikere-3C » Mon Nov 26, 2018 1:13 pm

To determine which molecule has the greater ionic character, are you supposed to base it off of the ionic radius? For example which has a greater ionic character between CH4 or CF4.

Cody Do 2F
Posts: 62
Joined: Fri Sep 28, 2018 12:23 am

Re: Ionic character

Postby Cody Do 2F » Mon Nov 26, 2018 1:30 pm

The strength of ionic character in a covalent bond can be determined by the difference in electronegativity between the atoms! A larger difference means greater ionic character. Electronegativity increases as you go from left to right on a period and decreases as you go down a group (Fluorine is the most electronegative element in existence).

When comparing CH4 and CF4, you just have to look at the two elements in each. Carbon is a constant in both molecules, so it's really just the hydrogen and fluorine you have to look at. As fluorine is the most electronegative element there is (and it's also much farther right on the periodic table than H), you can tell that the difference in electronegativity between carbon and fluorine is greater than that between carbon and hydrogen.


Return to “Ionic & Covalent Bonds”

Who is online

Users browsing this forum: No registered users and 1 guest