Chemistry 212-213
Reveiw
Molecular Structure
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1) A __________ covalent bond between the same two atoms is the longest.
A) triple
B) double
C) single
D) They are all the same length.
E) strong
1)
2) In the molecule below, which atom has the largest partial negative charge __________?
2)
Cl
F
C
Br
I
A) F
B) C
C) I
D) Cl
E) Br
3) The ability of an atom in a molecule to attract electrons is best quantified by the __________.
A) electron change-to-mass ratio
B) electronegativity
C) diamagnetism
D) paramagnetism
E) first ionization potential
3)
4) Given the electronegativities below, which covalent single bond is most polar?
4)
Element:
Electronegativity:
A) O-C
H
C
2.1
2.5
B) C-H
N
3.0
O
3.5
C) N-H
5) Which formula/name pair is incorrect?
manganese(II) nitrate
A) Mn(NO3 )2
manganese(II) nitrite
B) Mn(NO2 )2
D) O-H
E) O-N
5)
magnesium nitrate
C) Mg(NO3 )2
D) Mg(MnO4 )2 magnesium permanganate
E) Mg3 N2
magnesium nitrite
6) Which formula/name pair is incorrect?
iron(III) sulfite
A) Fe2(SO3 )3
B) FeSO4
C) FeSO3
D) FeS
E) Fe2(SO4 )3
6)
iron(II) sulfate
iron(II) sulfite
iron(II) sulfide
iron(III) sulfide
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7) Which one of the following compounds is copper(I) chloride?
A) CuCl2
B) Cu2Cl3
C) CuCl
D) Cu3Cl2
E) Cu2Cl
7)
8) The correct name for MgF2 is __________.
8)
9) A correct name for Fe(NO3 )2 is __________.
9)
A) manganese difluoride
B) manganese bifluoride
C) magnesium difluoride
D) monomagnesium difluoride
E) magnesium fluoride
A) ferric nitrite
B) iron nitrite
C) ferric nitrate
D) ferrous nitrite
E) ferrous nitrate
10) The molecular geometry of the PHCl2 molecule is __________.
10)
11) The molecular geometry of the CHCl3 molecule is __________.
11)
12) The F-B-F bond angle in the BF2- ion is approximately __________.
12)
A) trigonal planar
B) T-shaped
C) tetrahedral
D) trigonal pyramidal
E) bent
A) trigonal planar
B) trigonal pyramidal
C) bent
D) tetrahedral
E) T-shaped
A) 180°
B) 90°
C) 109.5°
D) 120°
E) 60°
13) In order to produce sp3 hybrid orbitals, __________ s atomic orbital(s) and __________ p atomic
orbital(s) must be mixed.
A) two, three
B) one, three
C) one, one
D) two, two
E) one, two
13)
14) The electron domain and molecular geometry of BrO2- is _________.
14)
A) trigonal pyramidal, seesaw
B) trigonal pyramidal, linear
C) tetrahedral, bent
D) trigonal planar, trigonal planar
E) tetrahedral, trigonal planar
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