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IX. 3. Molecular Polarity p. 198-204
Polar Molecules The bond between atoms with different electronegativities gives rise to a dipole Dipole-dipole bonds are stronger than London Forces
Ex: H-Cl Has dipoles Unbalanced/ asymmetrical Dipole-dipole bond between molecules Polar molecule
Ex: Cl-Cl no dipoles Balanced molecule only London forces present between molecules Non-polar molecule
Other examples: H 2 O BI 3 O 2 CCl 4 CCl 3 H
Boiling & Melting Temperature Ionic highest bp & mp Then if covalent: Polar molecule with a H-bond Polar molecule Higher # of electrons (atomic #)
Ex: N 2 (l) = - 196 C Covalent Non-polar Low mp & bp
O 2 (l) = - 183 C Covalent Non-polar More electrons than N
NO (l) = - 152 C Polar covalent So higher mp & bp than non-polar covalents
Why do some solids dissolve in water but others do not? Why are some substances gases at room temperature, but others are liquid or solid? The answers.
Intermolecular Forces. Dispersion or London Forces Weakest intermolecular force Constant motion of electrons may lead to uneven distribution of electrons.
Covalent network lattices and covalent layer lattice
Cornell Notes Topic: Sect. 8.5: Electronegativity and Polarity
Covalent Bonds. Form when two or more non-metal atoms SHARE electrons. There is no transfer of electrons.
Covalent Carbon always forms 4 bonds Can form both polar and non-polar compounds Being organic means you have carbon Non-electrolytes Molecular.
Electronegativity and Polarity. Describe how electronegativity is used to determine bond type. Compare and contrast polar and nonpolar covalent bonds.
Polarity Chapter 6.1. Review A covalent bond is formed between two non-metals. Electrons are shared. Orbitals are overlapping.
shared bonding electrons pairs are pulled (as in a “tug-of-war”) between atoms results in an equal or unequal sharing.
What are Intermolecular forces? Intermolecular forces are weak forces of attraction between some covalent molecules. These attractions are responsible.
Bonding What exactly is a bond? Depends…Ionic or Covalent? Polar? NON-POLAR COVALENT=> equal sharing of electron pair 0 < ∆EN < 0.4 POLAR COVALENT= unequal.
9-9 Intermolecular Forces (IMFs) ~ (Section 14.3) And you.
bond formed by the giving or Ionic Bond bond formed by the giving or taking of electrons.
Y12 Chemistry. Having poles Opposite ends In molecules its respect to charge Covalent bonds can be either polar or non-polar Polarity.
Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. – In a polar molecule, one end of the molecule is slightly negative, and 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.
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