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Exam 3 review
Supplemental Instruction
Iowa State University
Nevin
Chem 177
Kingston
11/18/13
Show the trend for atomic radius, ionization energy, electronegativity, electron affinity, and zeffective.
Which atom would have a bigger radius 𝐶𝑎2+ 𝑜𝑟 𝐶𝑙 −
Which of the following atoms would these successive values of ionization energies match most likely?
I1 = 578
I2 =1451
I3 = 7733
a) K
b) Al
c) Ca
d) O
e) F
Write an isoelectronic series in order of increasing atomic number for P, Cl, S, K, Ca
Supplemental Instruction
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Which of the two shows the electron affinity energy change
a) 𝑁𝑎(𝑔) → 𝑁𝑎+ + 𝑒 −
b) 𝑁𝑎(𝑔) + 𝑒 − → 𝑁𝑎−
Complete and balance the reactions
𝐾2 𝑂 + 𝐻2 𝑂 →
𝐶𝑂2 + 𝑁𝑎𝑂𝐻 →
𝑁𝑖𝑂 + 𝐻𝑁𝑂3 →
What electronegativity difference would a bond be considered non polar, polar, and ionic?
Which has higher lattice energy?
NaCl
or
CaCl_2
What is the relationship between lattice energy and Atomic radius?
Draw the lewis dot structure for the following molecules:
Find Formal charges, show net polarity.
𝑁2
𝑆𝑂42−
Finish the statement.
Elements past group ______ are capable of accommodating more than 8 electrons.
Estimate the bond enthalpy for the following reaction:
2 𝐶𝐻4 (𝑔) + 𝑂2 (𝑔) → 2𝐶𝐻3 𝑂𝐻(𝑔)
1)
2)
3)
4)
5)
6)
CH4
Draw the lewis structures
Show net polarity
Show hybridization of each bond
List how many Sigma and Pi bonds there are
Write the geometry
Predict the bond angles
SF6
𝐶𝑙2 𝐶𝑂
NO3 –
Organic Compound (Only label the hybridization of the bonds)
Draw an MO Diagram for OF +, find the bond order, label as paramagnetic or diamagnetic.
What assumptions must be made to use Charles’ Law, Boyle’s Law, and Gay-Lussac’s Law?
What is the molar mass of a gas in a balloon that can hold 5 L with 20g of gas with 800 mm Hg of
pressure and 38 degrees C?