How do you determine the highest electron density?
Counting Regions of High Electron Density
- Draw the Lewis structure for the molecule or ion.
- Count the total number of regions of high electron density (bonding and unshared electron pairs) around the central atom. Double and triple bonds count as ONE REGION OF HIGH ELECTRON DENSITY.
Where is the highest electron density in an atom?
The answer is that electrons are generally in higher amounts around the more electronegative atoms (e.g. F, Cl, O, N) of a molecule. The electronegative atoms pull electron density away from the less electronegative atoms (e.g. C, H) to which they are bonded.
What makes an atom more electronegative?
An atom’s electronegativity is affected by both its atomic number and the size of the atom. The higher its electronegativity, the more an element attracts electrons. The nuclear charge is important because the more protons an atom has, the more “pull” it will have on negative electrons.
What does higher electron density mean?
Electron density: An atom or group with higher electron density means some aspect of molecular structure (such as resonance or inductive effects) is shifting negative charge towards this spot in the molecule.
What does it mean to have high electron density?
Does resonance increase electron density?
The resonance decreases the electron density at the ortho- and para- positions. The reason is that they are both inductive electron withdrawing (due to their electronegativity) but they are also resonance donating (lone pair donation).
Which carbon has highest electron density?
So, C1, C2, C4, C5 all have highest electron density, while C3 and C6 have the lowest?