bonding review you need a periodic table, electronegativity table & polarity chart!
TRANSCRIPT
BONDING REVIEW
You need a Periodic Table, Electronegativity table &
Polarity chart!
What is the correct bond angle for “Bent” – with 2 lone pairs on the
central atom?
105
What is the predicted bond angle for the
following compound?
109.5
Write the electron dot notation for sulfur.
S
How many valence electrons does CO3-2?
24
When predicting bond types, list the range for
ionic.
1.7 and higher
Where are valance electrons found?
Outermost energy level
What is an isomer?
Compounds with the same molecular
formula, but different structural formulas
______ is the measure of the ability of an atom to attract electrons.
Electronegativity
A single bond is a covalent bond produced
by the sharing of _____pair of electrons between two atoms
one
Assign partial charges for the following pair of
atoms: N and O
N-O
Note: O gets the – b/c it has a higher electronegativity value!
+ -
What is the predicted bond angle for the
following compound?
180
What is the molecular geometry of the
following?:
Trigonal planar
A chemical bond resulting from
electrostatic attraction between positive and negative ions is a(n)
_______
IONIC BOND
What is the predicted bond angle for the
following compound?
120
What is the probable bond type for K and F?
0.8-4.0 = 3.2 difference so it’s IONIC
What is the correct bond angle for “tetrahedral”?
109.5
Is this molecule Polar or Nonpolar?
NCl3
You need to use your polarity chart!
Nonpolar
How many valence electrons does NH4
+1?
8
How many electrons does hydrogen need in order to be considered
stable?
2
________ is a covalent bond in which the
bonding electrons are shared equally by the
bonded atoms
NONPOLAR covalent
What are the following considered?:
H2, O2, N2, Cl2, Br2, I2, and F2
Diatomic molecules (naturally occuring)
What is the predicted bond angle for the
following compound?
120
MgF2
What is the ratio between the ions?
1Mg : 2 F
A triple bond is a covalent bond produced
by the sharing of _____pairs of electrons between two atoms
THREE
When predicting bond types, list the range for
polar covalent.
0.3-1.7
A - is assigned to the atom with the
_______electronegativity
Highest
Ionic compounds contain what type(s) of
element(s)?
Metals and nonmetals
What phase(s) of matter would you most
likely find ionic compounds?
SOLIDS
________ is the simplest collection of atoms from which an ionic compound’s formula can be established
Formula unit
What is the molecular geometry of the
following:
Trigonal pyramidal
What is the correct bond angle for “Bent” – with 1 lone pairs on the
central atom?
120
Molecular substances usually involve only
what type of elements?
NONMETALS
Is this molecule Polar or Nonpolar?
Cl2OYou need to use your
polarity chart!
Polar
Chemical compounds tend to form so that each atom (by gaining, losing, or sharing electrons)
contains eight electrons in its outermost occupied main energy
level is known as the _______________
Octet Rule
Write the electron dot notation for lithium.
Li
What is the predicted bond angle for the
following compound?
105
What type of bond is illustrated in the picture?
Polar Covalent Bond
+ -
__________are electrons involved in bonding.
VALANCE Electrons
_______ is a neutral group of atoms held together by covalent
bonds
Molecule
What is the correct bond angle for
“trigonal pyramidal”?
107
What is the probable bond type for H and C?
2.1-2.5 = 0.4 difference so it’s POLAR COVALENT
______ is a molecule containing only two
atoms
Diatomic molecule
What is the correct bond angle for
“trigonal planar”?
120
_____ is an electron pair NOT involved in
bonding
Lone pair
What is the molecular geometry of the
following?:
Bent
______ is an electron pair involved in bonding
Bond pair
A double bond is a covalent bond produced
by the sharing of _____pairs of electrons between two atoms
TWO
List the 3 elements that are exceptions to the
octet rule.
H, Be, B
What phase(S) of matter would you find molecular substances?
Solids, liquids, gases
What two items needs to be added to the
electron dot/structural formulas for polyatomic
ions?
Bracket
Charge
What is the predicted bond angle for the
following compound?
107
When predicting bond types, list the range for
nonpolar covalent.
0-0.3
What is the correct bond angle for
“linear”?
180
_________ is a covalent bond in which the
bonding electrons are shared unequally by the bonded atoms
POLAR covalent
What is the molecular geometry of the
following?:
Linear
What is the probable bond type for H and H?
2.1-2.1= 0 difference so it’s NONPOLAR COVALENT
A chemical bond resulting from the
sharing of electrons between two atoms is
_______
Covalent Bond
What type of bond is illustrated in the picture?
Nonpolar Covalent Bond
What is the molecular geometry of the
following?:
Tetrahedral
Use electron-dot formulas to illustrate the formation of ionic
bonds involving Ca and F.
Ca + F + F
Ca+2 + F-1 + F-1 CaF2