Chemistry 2 Exam 2

Concepts

100

What do lewis structures of molecules illustrate?

A.the tendency to attract electrons in a covalent bond

B.two-dimensional molecular geometry 

C.the most stable configuration of valence electrons arranged around covalently-bonded atoms.

C

200

The steric number refers to:

A. the number of bonded atoms plus the number of non- bonding electron pairs.

B. the number of bonded atoms

C.the number of lone pairs associated with an atom

A

300

Molecules that have a permanent dipole are found to-

A.have a higher boiling point

B.Become oriented in an electric field 

C.Exhibit intramolecular attractive forces

D.have both positive and negative ends(sides)

E.All of the above

E

400

An atom that has undergone sp hybridization has how many non-hybridized p-orbitals?

A.1

B.2

C.3

D.4

B

500

Which statement Regarding a pi bond between two carbon atoms is correct?

A.results from the overlap of two non-hybridized p-orbital.

B.Allows for free rotation around the bond axis

C.they involve the non-valence electrons in the 1s orbitals.

 

A

Molecular/Electronic geometry

100

E=Octahedral 

M=Square pyramidal 

200

E=Trigonal Bipyramidal

M=Seesaw

300

E=Tetrahedral

M=Trigonal Pyramidal 

400

E=Trigonal Planar

M=Bent

500

E and M= Octahedral 

Steric/Hybridization

100

Steric=2

Hybridization=SP

200

Steric:6

Hybridization:sp3d2

300

Steric:4

hybridization:sp3

 

400

Steric:4

hybridization:sp3

500

Steric:6

Hybrization:sp3d2

Resonance/formal charge

100

ClO₂^-

200

NO₂^-

300

CO₃^2-

400

BH4

500

each O is +1 

S is +2

Polarity

100

polar

200

Polar

300

polar

400

non-polar

500

Non-polar