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schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 1
This print-out should have 33 questions.Multiple-choice questions may continue onthe next column or page –
001 10.0 points
If the following crystallize in the same type ofstructure, which has the lowest lattice energy?
1. BaS
2. BaO
3. SrS
4. SrO
5. CaO
002 10.0 points
Which pair of elements is most likely to forman ionic compound?
1. nitrogen and sulfur
2. sodium and aluminum
3. oxygen and chlorine
4. magnesium and fluorine
003 10.0 points
Choose the pair of names and formulae thatdo not match.
1. MgSO4 : magnesium sulfate
2. SiCl4 : silicon tetrachloride
3. SnCl4 : tin(V) chloride
4. KNO3 : potassium nitrate
5. N2O3 : dinitrogen trioxide
004 10.0 points
Which do you predict to have the strongestCN bond?
1. All are equal
2. NH2CH3
3. NHCH2
4. HCN
005 10.0 points
Which of the following contains only covalentbonding and no ionic bonding?
1. CCl4
2. Ca(NO3)2
3. NaOH
4. NaCl
5. Na2SO4
006 10.0 points
Resonance is a concept that describes thebonding in molecules
1. by asserting that double bonds “flip”or resonate between two locations in themolecule.
2. by asserting that electrons in a doublebond can delocalize (spill over) onto adjacentsingle bonds to make a bond and a half.
3. where there is more than one choice oflocation for a double bond as deduced fromLewis dot structures. The true bonding isthe average over all possible double-bond lo-cations.
007 10.0 points
Which of the following contains exactly oneunshared pair of valence electrons?
1. H2S
2. C2H4
3. NaCl
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 2
4. PH3
5. SiH4
008 10.0 points
Let X be a hypothetical element.Which of the following would be largest?
1. X−
2. X+
3. X2−
4. X
5. X2+
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 3
009 10.0 points
How many resonance structures can bedrawn for N2O? Disregard any structure withformal charges other than 0, +1, and −1.
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 4
010 10.0 points
Which of the following is the correct Lewisformula for acetylene (ethyne, C2H2)?
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 5
011 10.0 points
Compounds which are characterized as cova-lent are generally made up of elements foundin which part of the Periodic Table?
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 6
012 10.0 points
The P2− anion has how many total electronsand how many valence electrons?
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 7
013 10.0 points
Use electron-dot notation to demonstratethe formation of an ionic compound involvingthe elements Na and S.
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 8
014 10.0 points
What is the formula of carbon disulfide?
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 9
015 10.0 points
Name the compound CaC2O4.
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 10
016 10.0 points
Give the formula for sodium nitrate.
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 11
017 10.0 points
Which of the following is the best represen-tation of the compound calcium sulfide?
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 12
018 10.0 points
An element E has the electronic configuration[Ne] 3s2 3p1. Write the formula of its com-pound with sulfate.
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 13
019 10.0 points
What total number of valence electronsshould appear in the dot formula for the chlo-rate ion ClO−
3?
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 14
020 10.0 points
Which of the three Lewis structures isthe most important for the fulminate ion(CNO−)?
I) +1 +1−3
N OCbb
b b
bb bb
II) +1 −1−1
NC Ob
b
bb
b b
bb
III) +1 0−2
N O
b b
bb
C
bb
b b
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 15
021 10.0 points
Howmany valence electrons are in a Ar atom?
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 16
022 10.0 points
Which is the correct order of increasing bondstrength?
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 17
023 10.0 points
What is the correct Lewis formula for oxy-gen (O2)?
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 18
024 10.0 points
How many lone pairs of electrons are onnitrogen in NF3?
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 19
025 10.0 points
How many unshared electrons and bondingelectrons exist around the central atom inozone (O3)?
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 20
026 10.0 points
Choose the formula for the compound magne-sium sulfide.
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 21
027 10.0 points
Name the compound CaBr2.
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 22
028 10.0 points
Calculate the formal charge on N in themolecule NH3.
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 23
029 10.0 points
How many double bonds are present in the“best” resonance structure of the phosphateion?
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 24
030 10.0 points
An element E has the electronic configura-tion 1s2 2s2 2p4. What is the formula of itscompound with lithium?
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 25
031 10.0 points
The CO2−3
ion has how many resonance con-figurations?
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 26
032 10.0 points
Which of the following is the correct Lewisformula for boron trichloride (BCl3)?
schreiber (mcs3445) – Bonding worksheet - Bring on Wed. – franks – (89422x) 27
033 10.0 points
Which of the following is the correct Lewisformula for chlorine fluoride (ClF)?
