Ionic Bonds
The charge of an ion
What is positive or negative
covalent bond
The melting point is higher for (ionic or covalent) compounds
ionic
According to the octet rule, Ca has a tendency to
lose 2 electrons
Central atom has 2 other atoms attached to it
Linear
Type of bond where ions grouped together in a tightly packed structure
What is an ionic bond
What factor relates to most stable bond energy
lowest potential energy
The boiling point of water is higher than the boiling point of H2S because
water is more polar and has hydrogen bonds
when a molecule or ion can be represented by more than one lewis structure
Resonance Structure
Central atom has 2 other atoms attached to it and 1 or 2 lone pairs of electrons
Bent
List 3 characteristics of ionic compounds
high melting point, brittleness, forms crystal structure, amount of dissolved minerals (hardness)
What is the electronegativity difference for a polar covalent bond
0.4-1.6
A decrease in potential energy means that there is
a more stable arrangement of matter (molecules)
What is the lewis structure of SO2?
Draw structure
Central Atom has 3 atoms attached to it?
Trigonal planar
Group of atoms acting together that share a charge
polyatomic ion
Name a characteristic about nonpolar covalent bonds
low electronegativity difference, diatomic molecules
A bond type that has overlapping orbitals that allow the outer electrons to move freely through the lattice
Metallic bonds
What is the Lewis structure of C2H4?
Draw structure.
Central atom has 4 atoms attached to it?
Tetrahedral
Determined by the sizes of cations and anions and the ratio of cations to anions
crystal structure
As the electronegativity difference between bonded atoms decreases, the bond becomes more
covalent
what 2 things determine if a molecule is polar
the polarity of the bonds within that molecule and the molecule's geometry
What is the Lewis structure of SiF4?
Draw structure.
Central atom has 5 atoms attached to it?
Trigonal bipyramid