Ionic vs. Covalent
Ionic bonds are formed by the complete __________ of one or more electrons.
Covalent bonds are formed by a shared pair of __________ __________.
transfer; valence electrons
Ionic or Covalent?
dihydrogen monosulfide (H2O)
Write the Lewis Dot Diagrams for the following:
-silicon atom:
:Si:
Na3N
sodium nitride
carbon tetrachloride
CCl4
What type of bond is formed between nonmetal atoms? How many types of these bonds can form? List them.
Covalent bond; three - single, double, triple
Ionic or Covalent?
iron (II) oxide (FeO)
Write the Lewis Dot Diagrams for the following:
-beryllium atom
-beryllium ion
Be:
Be2+
Mg3N2
magnesium nitride
aluminum chloride
AlCl3
What type of bonding would you expect in a compound that contains a metal and a nonmetal?
Ionic bonding
Ionic or Covalent?
sodium nitride (Na3N)
ionic
Write the Lewis Dot Diagrams for the following:
-chlorine atom
-chloride ion
Cl (7 v.e-)
[::Cl::]-
SO5
sulfur pentoxide
phosphorus tribromide
PBr3
When a metal atom loses electrons it forms a positive ion or __________. When a nonmetal atom gains one or more electrons it forms a negative ion or __________.
cation; anion
Ionic or Covalent?
nitrogen trichloride (NCl3)
polar covalent
Write the Lewis Dot Diagrams for the following:
-magnesium atom
-magnesium ion
Mg:
Mg2+
PI3
phosphorous triiodide
rubidium oxide
Rb2O
Covalent substances have _____ melting points and boiling points compared to ionic compounds or metals.
low
Ionic or Covalent?
methane (CH4)
nonpolar covalent
Write the Lewis Dot Diagrams for the following:
-sulfur atom
-sulfur ion
:S::
[::S::]2-
P5N3
pentaphosphorous trinitride
dihydrogen monoselenide
H2Se