...molecule is said to be a “polar”

Slides:

Advertisements

Similar presentations

MOLECULAR SHAPE HOW DOES SHAPE AND POLARITY DETERMINE FUNCTION AND PROPERTIES OF MOLECULES?

Advertisements

Molecular Geometry Lewis structures show the number and type of bonds between atoms in a molecule. –All atoms are drawn in the same plane (the paper).

Polar Molecules H F electron rich region electron poor region d+ d-

Lecture 21: Ionic to Covalent Reading: Zumdahl Outline –Binary Ionic Compounds –Partial Ionic Compounds –Covalent Compounds.

Polar Molecular Compounds SWBAT: Identify Polar and Nonpolar Molecules.

Lecture 21: Chemical Bonding

Lecture 21: Chemical Bonding Reading: Zumdahl Outline –Types of Chemical Bonds –Electronegativity –Bond Polarity and Dipole Moments.

Properties of Bonds Polarity Bond Order Bond Length Bond Energy.

Chapter 1 Dipoles, molecular polarity. Ways to Represent Polarity in Molecules H F electron rich region electron poor region  

Polarity of Bonds Molecular Polarity. Equal Pull on Electrons If there is no difference in the electronegativity of the atoms forming a covalent bond,

Molecular Polarity AP Chemistry.

Polar vs. Non Polar Molecules. Covalent/Molecular Compounds All molecular compounds are either polar or nonpolar.

Y12 Chemistry.   Having poles  Opposite ends  In molecules its respect to charge  Covalent bonds can be either polar or non-polar Polarity.

 Electronegativity Electronegativity  Polarity of Bonds Polarity of Bonds  Dipole Moment Dipole Moment  Dipole Moment of Polar Covalent Bond Dipole.

POLAR BONDS AND MOLECULES Ms. Withrow November 10, 2008.

Predicting Molecular Polarity  When there are no polar bonds in a molecule, there is no permanent charge difference between one part of the molecule and.

Polar Molecular Compounds

Polarity – It exists in two forms Bond Polarity We looking at the difference in electronegativies between atoms to determine how they share their electrons.

Aim: What are polar bonds and polar molecules?

1 Molecular Polarity. 2 Polar Molecules Polar molecules are molecules that have a slightly positive end or pole and a slightly negative end or pole. The.

Section 12.1 Characteristics of Chemical Bonds 1.To learn about ionic and covalent bonds and explain how they are formed 2.To learn about the polar covalent.

Dipole Moments and Polar Molecules 10.2 H F electron rich region electron poor region    = Q x r Q is the charge r is the distance between charges.

Covalent Bonding Chapter 6 Section 1. Covalent Bonds Ionic bond – transfer of e- Ionic bond – transfer of e- Covalent bond – a bond formed when atoms.

CHM 101 Predicting and Understanding the Behavior of Molecules

Polar Bonds and Molecules Chapter 8.4. Learning Objectives Be able to use electronegativity to identify polar vs. non-polar covalent bond Draw correct.

Section 12.1 Characteristics of Chemical Bonds 1.To understand the nature of bonds and their relationship to electronegativity 2.To understand bond polarity.

Chemistry Brodersen 2013/2014. Polarity in a molecules determines whether or not electrons in that molecule are shared equally. When determining the polarity.

Chemical Bonding List the three types of bonds List the substances that compose the three types of bonds Draw the Lewis Dot Structure, Molecular Geometry,

Polar Bonds and Molecules (8.4) Bond Polarity Bond polarity has to do with unequal distribution of shared electrons This causes one end of the bond to.

Aim: What are polar bonds and polar molecules? Polar and Nonpolar Bonds There are two types of covalent bonds Nonpolar Covalent Bonds (equal share of.

Bonding. Bond The force that holds two atoms (ions) together. Bonding releases energy – Exothermic.

Bonding Chapter 8.

Molecular Compounds Polarity.

6.7 Electronegativity and Bond Polarity

Molecular Polarity AP Chemistry.

Polarity of Covalent Bonds

Electronegativity and Forces

Exercises 6. trigonal planar 7. bent 8. trigonal pyramidal 9. T-shaped

Bonding Ionic Covalent 8.4 Bond Polarity Polar Nonpolar.

3.7: Polar Covalent Bonds and Electronegativity

Polarity of Molecules Revisited

7.12 – NOTES Bond and Molecular Polarity Using Models

Electronegativity and Polarity

Molecular Geometry and Polarity

Electronegativity and Polarity

Notes: 9.5 OBJECTIVES: Students will be able to (SWBAT)

Polar Bonds and Molecules Chapter 8.4

Polar and Nonpolar Cl H -Electronegativity is the ability of an atom to pull or attract electrons shared between two atoms -An atom.

Electronegativity: Electron Distribution in a Bond

Electronegativity and Polarity

The relative ability of an atom to attract bonded electrons to itself is called what? Electronegativity Homework – Study for tomorrow’s Ch12 Exam.

Polarity and Electronegativity

Chapter 12 Covalent Bonding

GEOMETRY AND POLARITY OF MOLECULES

Essential Question: What are polar bonds and polar molecules?

Packet #5 Quiz.

Recall: Electronegativity

What are polar bonds and polar molecules?

The relative ability of an atom to attract bonded electrons to itself is called what? Electronegativity Homework – Study for tomorrow’s Ch12 Exam.

Bond Lengths and Energies

Lewis Structures and Covalent Bonding

2.1 Polar Covalent Bonds: Electronegativity

Electronegativity and Polarity

Unit 4 Bonding Theories.

Molecular Polarity Just like bonds, molecules can be:

7.8 – NOTES Molecular Polarity

Introduction Presentation

Electronegativity and Polarity

Presentation transcript:

...molecule is said to be a “polar” Molecular Polarity Molecule Polar Molecules: + - Contain + and - ends: Charged ends or “poles” are the result of polar bonds within the molecule and... ...the molecule’s geometry. Dipole Moment Vector ...molecule is said to be a “polar” H Cl + - En = 2.1 En = 3.0 En = 0.9  Polar Covalent Bond

Dipole Moment:  d  = q  d H Cl + - q: Magnitude (: coulombs) of the charge at either end of the molecule ...larger when more electronegative elements are involved. d: Distance between the charged ends of the molecule.

Largest Dipole Moments:  = q  d  F H H Cl H Br Larger H I Larger ...differences in d Bond Length (d)  F H small 92 pm H Cl Larger 127 pm H Br Larger 141 pm Largest 161 pm H I

Largest Dipole Moments:  = q  d + -  F H H Cl Larger H Br H I + ...differences in En Bond Length (d) En  Largest + F H - 92 pm 4.0 - 2.1 H Cl Larger 127 pm 3.0 - 2.1 + - H Br - Larger 141 pm 2.8 - 2.1 + 161 pm H I 2.5 - 2.1 small + -

Dipole Moments:  = q  d + -  F H H Cl H Br H I + - ...two conflicting predictions... ...nature tells us what’s correct Bond Length (d) En  + F H -  = 1.92 D 92 pm 4.0 H Cl 127 pm 3.0 + -  = 1.08 D H Br  = 0.78 D 141 pm 2.8 + - 161 pm 2.5 H I  = 0.38 D + -

Dipole Moments:  = q  d F H H Cl H Br H I H-X Series: Electronegativity differences are more important than bond length differences. F H  = 1.92 D H Cl  = 1.08 D H Br  = 0.78 D The length of the dipole moment vector suggests the size of the molecule’s dipole moment, . H I  = 0.38 D