Properties
What combination of elements makes a covalent bond?
non-metals + non-metals
Name this ionic compound:
K2S
Potassium sulfide
Write the formula for Dinitrogen hexasulfide
N2H6
Draw the lewis diagram for lithium
Li (with one dot)
Metals and non-metals
In Ionic Compounds, the melting point is ________ and in covalent, the melting point is ______
high (ionic)
low (covalent)
Name this covalent compound:
C3H8
Tricarbon Octahydride
Write the formula for Calcium Iodide
CaI2
Draw the completed Lewis diagram for carbon bonding to hydrogen
One C connected to four H's by sharing electrons.
How many valence electrons does selenium have? AND what charge does it make?
6 valence electrons and a -2 charge.
what type of bond involves equal sharing of electrons between bonded atoms?
nonpolar covalent bonds
Name the covalent prefix for "seven".
Hepta
Write the formula for Boron Triiodide
BI3
H has an electronegativity of 2.1, Cl has an electronegativity of 3.0.
Do these elements create a nonpolar or polar bond and where does the electron exist within the bond?
(think: what box would it go in?)
polar covalent bond and it moves partially towards chlorine (box 4)
H---*-Cl
Draw the lewis diagram for Bromine
Br (with 7 dots around it, one dot is unpaired)
Which bond type transfers electrons and which bond type shares electrons?
ionic transfers
covalent shares
Name this compound:
BaCl2
Barium Chloride
Write the formula for rubidium phosphide
Rb3P
Draw the completed Lewis diagram for radium atom bonding to a sulfur atom
One Ra with two arrows transferring electrons to one S
what type of bond involves unequal sharing of valence electrons between bonded atoms?
polar covalent bonds
Which type of bond exhibits these characteristics?
exhibits conductivity by dissociating in water
Ionic
Name this compound:
PBr4
Phosphorus tetrabromide
Write the formula for aluminum nitride
AlN
N has an electronegativity of 3.0, Br has an electronegativity of 2.8.
Do these elements create a nonpolar or polar bond and where does the electron exist within the bond?
(think: what box would it go in?)
nonpolar bond and it sits directly in the middle (box 3)
N--*--Br
Put these covalent prefixes in order of smallest to largest.
octo, tetra, hepta, penta, tri, hexa
tri, tetra, penta, hexa, hepta, octo