Page 1 of 1

Relationship between Electronegativity and Ionization Energy?

Posted: Thu Oct 24, 2019 12:57 pm
by alicechien_4F
What is the relationship between electronegativity and ionization energy? I know Dr. Lavelle said that the atom with the lowest ionization energy is the central atom for a lewis structure, but in high school I learned that the central atom was the most electronegative atom. Is the atom with the lowest ionization energy the atom with the highest electronegativity? Thank you!

Re: Relationship between Electronegativity and Ionization Energy?

Posted: Thu Oct 24, 2019 1:07 pm
by Parker Smith
An atom with a low IE (Ionization energy) typically has a low electronegativity. If an atom has a low electronegativity, it takes less energy to remove the electron since the effective nuclear charge the electron is experiencing is less. I believe the atom with the lowest IE is in the middle because it is more likely to share electrons versus an atom with high electronegativity.

Re: Relationship between Electronegativity and Ionization Energy?

Posted: Thu Oct 24, 2019 6:59 pm
by Micah3J
Is the electron affinity a number that we will have to calculate or something we memorize?

Re: Relationship between Electronegativity and Ionization Energy?

Posted: Thu Oct 24, 2019 8:10 pm
by ishaa Diwakar 4E
Atoms with low ionization energy will usually have higher electronegativity. Therefore, the atom will be less likely to lose its own electrons and more likely to attract electrons from another atom. Electron affinity, in my experience, is usually given. If not, you can calculate it using other values.

Re: Relationship between Electronegativity and Ionization Energy?

Posted: Fri Oct 25, 2019 1:05 am
by Jenna Ortiguerra 4G
Electronegativity is the tendency of an atom to attract a shared pair of electrons. Electronegativity increases as you go up and across the period of the periodic table (fluorine is the most electronegative element). Ionization energy is the energy required to remove an electron from an atom or ion. Ionization energy shares the same trend as electronegativity. This is because atoms that are more likely to attract electrons are less likely to lose their own electrons.

Re: Relationship between Electronegativity and Ionization Energy?

Posted: Fri Oct 25, 2019 1:07 am
by Alexa Hernandez 3k
They do have similar tendencies...

Re: Relationship between Electronegativity and Ionization Energy?

Posted: Fri Oct 25, 2019 1:33 am
by melinak1
alicechien_1I wrote:What is the relationship between electronegativity and ionization energy? I know Dr. Lavelle said that the atom with the lowest ionization energy is the central atom for a lewis structure, but in high school I learned that the central atom was the most electronegative atom. Is the atom with the lowest ionization energy the atom with the highest electronegativity? Thank you!



it is generally a direct relationship