Describe a covalent bond. Identify the parts of a covalent compound diagram. Draw a stick diagram of a covalent compound. Name the following ionic compounds: 02/03/ Ni 2 CO 3 2.Fe(SO 3 ) 2 3.FeBr 3 4.K 2 SO 4

Reminders Polyatomic QUIZ - Monday

Remember… Ionic bond – Bond formed by the transfer of electrons – Between a metal and nonmetal K Cl CationAnion 1+ 1-

Covalent Bond Covalent bond – Bond formed by the sharing of valence electrons – Between 2 or more nonmetal elements – Atoms will share electrons so that they obtain 8 electrons in their outermost orbital.

7 valence electrons

8 valence electrons

Remember Lewis Dots… Draw Lewis dots for the following atoms… ONFHC

Covalent Compound Diagrams Diagrams that show how atoms in a molecule are covalently bonded together Every line = 2 electrons being shared

Parts of Covalent Compound Diagram Central Atom

Parts of Covalent Compound Diagram Single Bond

Parts of Covalent Compound Diagram Lone Pair

Steps to Drawing Diagram Step 1: Arrange the atoms into a skeleton structure. a.least electronegative element goes in the center b.Hydrogen goes on the outside. c.Carbon goes in the center.

Example 2: AsCl 3 As Cl

Steps to Drawing Diagram Step 2: Draw the _______ _____ diagram for each atom. Lewis dot

Example 3: AsCl 3 As Cl

Part 2: Steps to Drawing Diagram Step 3: Draw a line to connect the single electrons between the central atom and the surrounding atoms. a.Each line represents 2 electrons being shared.

Example 4: AsCl 3 As Cl

Example 5: AsCl 3 As Cl

Steps to Drawing Diagram Step 4: Count to make sure all valence electrons are accounted for in the diagram. Step 5: Check to make sure all atoms satisfy the octet rule. a.If needed, more than 2 electrons may be shared between 2 atoms.

As Cl Example 6: AsCl 3 8 valence