notUsingtheoctetruletocomputeformalchargesonatomsandmultiplebondingbetweenatomsSections3.3&3.4CovalentBondingandLewisStructures(1)Lewis―dot‖(electron)structuresofvalenceelectronsforatoms(2)UseofPeriodicTabletodeterminethenumberof―dots‖(3)UseofLewisstructurestodescribetheelectronicstructuresofatomsandmolecules(4)...
The Lewis structure indicates that each Cl atom has three pairs of electrons that are not used in bonding (called lone pairs) and one shared pair of electrons (written between the atoms). A dash (or line) is sometimes used to indicate a shared pair of electrons: Cl—Cl....
Role of Lewis Structures in Teaching Covalent Bonding.Comments on the role of the Lewis structures in teaching covalent bonding. Difficulties associated with the Lewis Theory; Empirical theory of chemical valence; Stability of the full octet electrons.Logan...
LEWIS DOT STRUCTURES: SINGLE ELEMENTS Show an atom’s valence electrons! Rules for a single element: 1. Fill each side one at a time 2. Maximum of 2 e- on each side This can change ONLY when bonding!!! K Se Ne O Br P Al Mg LEWIS DOT STRUCTURES: COVALENT BONDS Start with the el...
Charge Formal Charge - e pair lone of # 2 - e bonding of # - e Valence of # = Charge Formal The most stable Lewis structure is the one with the formal charges closest to zero. If possible, the Lewis structure with the negative formal charge on the most electronegative atom is ...
Construct a Lewis electron-dot structure that describes the bonding in a simple molecule or ion, including an example that contains lone pair electrons. Define bond order, and draw electron-dot structures for molecules with double and triple bonds. Explain the meaning of a "resonance hybrid";...
* The Lewis dot structure for H2molecule is shown below. Note that each hydrogen gets two electrons after forming the bond. The bond between two hydrogen atoms can be shown as a line, which represents a bond pair of electrons. Note: The bond between two hydrogen atoms is non polar since...
第一章 The Covalent Bond ( 共价键 ).ppt,一、 The procedure for writing Lewis structure Lewis 结构式的写法: 共享电子对用“-”表示,未共享电子对用“ ”,例: 为了正确写 Lewis 结构式必须注意 two concepts (两点概念): 1. Valence-Shell occupancy 价电子占有
The covalent bond is drawn as a dash in a Lewis structure to distinguish the bonding pair from the lone pair electrons. Lewis structures show the nonbonding electrons as pairs of dots located about the atomic symbols for the atoms. The Lewis structures of four simple organic compounds—methane...
the bonding in molecules or ions that cannot be correctly represented by a single Lewis structure trigonal bipyramidal 5 bonds, 0 lone pairs seesaw geometry the molecular geometry of a molecule with trigonal bipyramidal electron geometry and one lone pair Octahedral 6 bonding, 0 lone pairs expanded...