02-02-2011 Lecture

02-02-2011 Lecture - Electronega+vity Electronegativity is...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Electronega+vity Electronegativity is a chemical property that describes the tendency of an atom to attract electrons towards itself. The scale we most often use is Pauling Electronegativities Linus Pauling 1954 Nobel Prize in Chemistry Consider a hypothetical molecule H-X Electrostatics make actual > expected If H and X have the same electronegativities, Δ = 0 If H and X do not have the same electronegativities, Δ 0
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Electronega+vity F is equal to 4.0 all other atoms are relative to F
Background image of page 2
Rela+onship Between Electronega+veity and Bond Type
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Bond Polarity When two atoms participate in bonding, the polarity of the bond depends of the difference in electronegativity of the two atoms – The bigger the electronegativity difference, the more polar the bond – Put the following bonds in order of polarity: O-H, H-H, S-H, F-H, Cl-H Any diatomic molecule between atoms with a different electronegativity will have a polar bond
Background image of page 4
Diploe Moment: Property of a molecule whose charge distribution can be represented
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 9

02-02-2011 Lecture - Electronega+vity Electronegativity is...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online