Covalent bonds
Lewis Structures
Resonance Structures
Molecular Geometry
Polarity
100
Covalent bonds are the result of what?
sharing electrons
100
when given two or more atoms, how do you know what the central atom is?
It is written first
100
What are resonance structures used for?
To describe the bonding when one Lewis Structure doesn't adequately reflect its structure
100
What does the molecular geometry describe?
The arrangement of atoms around the central atom
100
What is it called when an atom does not have a net separation of charges?
non-polar
200
What is the number of pairs that is typically shared?
one, two, or three
200
What does the octet rule require?
The atoms attain 8 valence electrons
200
Do resonance structures vary the arrangement of the atoms?
No
200
If there are 5 pairs around the central atom, what is the arrangement of the pairs called?
triangular bipyramid
200
What must a polar molecule have?
At least one polar covalent bond
300
What are used in covalent bonding?
valence electrons
300
How many valence electrons does He have to obtain?
two
300
If there is one double bond and two single bonds, what can you conclude about the bond strengths?
They are somewhere between a single and double bond
300
what is the molecular geometry of water?
Bent
300
What must be examined in order to find the polarity of a molecule?
The molecular geometry
400
What is electronegativity?
the ability of an atom to attract the electrons forming a covalent bond
400
Draw the Lewis Structure for NF3
_ F-N-F / F
400
Draw the resonance structure for SO2
_ _ _ _ _ _ /O=S-O/ <-> /O-S=O/ - -
400
What is the molecular geometry of BF3?
triangular planar
400
what is the polarity of SO3?
non-polar
500
what three elements have the highest electronegativities?
nitrogen, oxygen, and fluorine
500
Draw the Lewis Structure for CO2
_ _ /O=C=O/
500
Draw the Resonance Structure for SO3
_ _ /O-S-O/ - // - /0/
500
What is the molecular geometry of C2H2?
Linear
500
what is the polarity of CH3Cl
polar
M
e
n
u