Chapter 12

Chapter 12 - Chemical Bonding Chapter 12 Chemical Bonding...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

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

Unformatted text preview: Chemical Bonding Chapter 12 Chemical Bonding Chemical Bonding Chemical Bonds Three basic types of bonds: Ionic Electrostatic attraction between ions Covalent Sharing of electrons Metallic Metal atoms bonded to several other atoms Chemical Bonding Electronegativity: The ability of atoms in a molecule to attract electrons to itself. On the periodic chart, electronegativity increases as you go: from left to right across a row. from the bottom to the top of a column. Chemical Bonding Polar Covalent Bonds When two atoms share electrons unequally, a bond dipole results. The dipole moment, , produced by two equal but opposite charges separated by a distance, r , is calculated: = Q r It is measured in debyes (D). Chemical Bonding Polar Covalent Bonds The greater the difference in electronegativity, the more polar is the bond. Chemical Bonding Lewis Structures Lewis structures are representations of molecules showing all electrons, bonding and nonbonding. Chemical Bonding Writing Lewis Structures 1. Find the sum of valence electrons of all atoms in the polyatomic ion or molecule. If it is an anion, add one electron for each negative charge. If it is a cation, subtract one electron for each positive charge. PCl 3 5 + 3(7) = 26 Chemical Bonding Writing Lewis Structures 2. The central atom is the least electronegative element that isnt hydrogen. Connect the outer atoms to it by single bonds....
View Full Document

This note was uploaded on 12/12/2011 for the course CHEM 50 taught by Professor Subramaniam during the Fall '11 term at UCSD.

Page1 / 31

Chapter 12 - Chemical Bonding Chapter 12 Chemical Bonding...

This preview shows document pages 1 - 9. Sign up to view the full document.

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