What are the three Types of Chemical Bonds
Metallic, Covalent, and Ionic
If you have the formula CaCl2 what does the "2" represent?
There are 2 chlorine ions
Outer Electrons that are involved in bonding are called what
Valence electrons
NaCl
Sodium Chloride
ionic
Sodium Iodide
NaI
Covalent bonding forms __________, while ionic bonding forms ______________.
molecules; crystals
Give # of valence electrons and the ion formed:
Potassium
1, K+
What are anions and cations
anion- negative ion
cation- positive ion
When writing an ionic formula, do you write the positive or negative ion first
Positive
If an atom gains an electron the charge is
negative
S2F7
disulfur heptafluoride
covalent bond
Carbon dioxide
CO2
When an ionic bond forms between a metal and a nonmetal, the cation is the __________ and the anion is the _____________.
metal; nonmetal
Give # of valence electrons and the ion formed:
Magnesium
2, Mg2+
What type of bond involves transferring electrons
Ionic Bond
What is the octet rule?
An atom must have 8 valence electrons to be satisfied and stable
Is the bond that forms the compound KCl ionic or covalent
Ionic
MgBr2
Magnesium Bromide
ionic
Lithium Nitride
Li3N
A group of atoms from exactly two different elements bonded together
binary compound
Give # of valence electrons and the ion formed:
Oxygen
6, O2-
What is the symbol (oxdiation) for a Magnesium ion?
Mg2+
This is unequal distribution of electric charge.
polarity or polar covalent
Ionic bonds are made up of what type of elements
metals and nonmetals
Al2O3
aluminum oxide
ionic
Magnesium Phosphide
Mg3P2
the smallest ratio of ions within an ionic compound
formula units
Give # of valence electrons and the ion formed:
Bromine
Br-
What is a bond formed when atoms share electrons
Covalent Bonds
What are two ways atoms can fulfill the octet rule?
transfer by losing or gaining electrons, share electrons
If Sulfur is directly below Oxygen will they have the same amount of valence electrons? If so, how many?
6
C4Cl9
tetracarbon nonachloride
covalent
calcium phosphide
Ca3P2
Name three diatomic elements
any of the H 7
Give # of valence electrons and the ion formed:
Phosphorus
5, P3-