Dr. Konfetka

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how do you tell which atom has the most ionic character?
 

djeffreyt

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Ionic character is determined by whether or nto an atom is willing to take on or give up an electron. The Noble gases have very low ionic character, while the atoms in the columns to the left or right of the noble gases have the strongest ionic character. Thus, F- is more ionic than O2- and same for the cations.

If you are talking about ionic molecules, not atoms, like HF or NaCl, that's a little different.
 

dat_student

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djeffreyt said:
Ionic character is determined by whether or nto an atom is willing to take on or give up an electron. The Noble gases have very low ionic character, while the atoms in the columns to the left or right of the noble gases have the strongest ionic character. Thus, F- is more ionic than O2- and same for the cations.

If you are talking about ionic molecules, not atoms, like HF or NaCl, that's a little different.
EDIT:
I misread. You meant O 2- not O2 -
 
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dat_student

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Dr. Konfetka said:
how do you tell which atom has the most ionic character?

Makes no sense.

The % ionic character of a bond is given by the electronegativity difference of the elements that are attached to the bond
 

dental#1

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I'm not sure if this is what your looking for, but I tried.


"Ionization energy is the energy required to remove an electron from a gaseous atom. The higher the energy, the more difficult it is to remove the electron. The trend is for ionization energy to be higher for atoms further to the right on the periodic table, with the noble gases having the highest ionization energy. Ionization energy also increases from bottom to top on the periodic table.

>> Example 1

Rank the following atoms from highest to lowest ionization energy.

Ca, F, Ne, Ge

Solution:

The element whose position is the highest and furthest right in the periodic table is neon. Therefore it has the highest ionization energy. The one whose position is closest to the bottom and furthest left is platinum. Therefore it has the lowest ionization energy. Fluorine is very near neon; it should be next highest. Germanium is between fluorine and calcium and so is its ionization energy.

highest Ne > F > Ca > Pt lowest"

http://www.wwnorton.com/chemistry/concepts/chapter6/ch6_1.htm#1
 
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