| Quantum Model of the Atom | Periodicity and Ionic Bonding | Covalent Bonding | Liquids and Solids | Phase Diagrams & Classification of Solids (Today) |
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What is False?
ml must be a number between -1 and +1.
True or False: This is a correct set of quantum numbers
(2, 1, 2, -1/2) |
What is [Kr] 5s2 4d10 5p6?
The electron configuration for Te^-2.
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What is D?
Recall the trend for electronegativity. The most polar bond will be the one with the highest electronegativity difference between its atoms, hence, C−F bond is the answer.
Which of the following is most polar?
a) Cl-Cl b) N-F c) C-F d) O-F |
What is deposition?
Identify the phase change in the following equation:
CO2(g) → CO2(s) |
What is solid?
In the phase diagram, at low temperatures and high pressures, the substance is in the _______ phase (upper-left region)
See: https://www.sciencegeek.net/APchemistry/APtaters/PhaseDiagrams.htm |
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What is Principal #, Angular Momentum #, Magnetic #, & Magnetic Spin #?
The names of the 4 quantum numbers they are
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What is Electronegativity and/or Electron Affinity?
What is a trend excludes the noble gases?
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What is...
C as central atom, with three Hs singly bound and 1 singly bound Cl containing 3 lone pairs. There are no charges on atoms in this lewis structure. https://www.chemistryscl.com/general/CH3Cl-lewis-structure/
What is the correct Lewis Dot Structure of CH3Cl?
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What is Hydrogen bonding (predominant force), Dipole-dipole attraction, and London Dispersion Forces?
(Dr. Atesin also considers this ion-dipole since H2O slightly dissociates)
List all of the Intermolecular Forces (IMFs) that hold H2O together? If there are multiple forces, name the predominant one.
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What is high (all 3)?
H2O has a _____ melting point, _____boiling points, and a _____ density for such a small molecule?
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What is a 4p orbital?
Which orbital would an electron with the following quantum numbers belong to?
(4, 1, 0, -1/2) |
What is Fr, Cs, Ca, Al, S?
The order for Atomic Radius for the following elements in DECREASING order
(Fr, S, Ca, Al, Cs) |
What is...
Se as central atom with one lone pair, with four singly bound Br's, each of which have three lone pairs. There are no charges on atoms in this lewis structure. https://www.makethebrainhappy.com/2017/07/selenium-tetrabromide.html
What is the correct Lewis dot structure for SeBr4?
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What is Liquid?
See: https://www.engineersedge.com/thermodynamics/triple_point.htm
If the pressure of a substance located at the triple point is tripled, what phase would it change to?
See: https://www.sciencegeek.net/APchemistry/APtaters/PhaseDiagrams.htm |
What is Crystalline solids (ice, table salt, etc.) & Amorphous solids (chocolate bar, glass, etc.)?
What type of solids are classified by their organization of particles, give an example of each.
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What is Silicon?
(3, 1, 0, +1/2)
This quantum numbers represent the last electron to be added to complete the ground state configuration of an element. This element is ___. Hint: First identify what electron configuration this specific electron would have. |
What is Barium (Ba)?
What is the element that has the configuration of [Xe] with less two electrons?
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What is..
Three possible resonance structures. https://files.mtstatic.com/site_4334/39345/0?Expires=1636658156&Signature=djtjaJ0aj03I9n7-OK6~sqHDnw-Cq2YDderK560ned1K8OSpQ1XWywImZQuLW8UapyugQnqt59R~~4y0dxgtQdzHBwDrQepmN5gipezN3Ty2V51ORka7l72veV7fPdC4~YPstfAPqP9dqc5uMPonhPlW-QFRzHTg7zzwuockNIM_&Key-Pair-Id=APKAJ5Y6AV4GI7A555NA Backup link; scroll to Answer # 7: https://chem.libretexts.org/Courses/Howard_University/General_Chemistry%3A_An_Atoms_First_Approach/Unit_2%3A__Molecular_Structure/Chapter_5%3A_Covalent_Bonding/Chapter_5.4%3A_Exceptions_to_the_Octet_Rule
Provide two resonance structures for (BrO3)-
(Three represents a subscript, i.e. there are 3 Oxygens) |
What is Viscosity, Surface Tension, Capillary Action, Boiling Point, Freezing Point, Enthalpy of Vaporization, Melting Point, Vapor Pressure, Solubility?
(Only need to name 5 of these to get points)
List 5 properties that IMF’s can affect/influence?
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What is Molecular Solids (CO2, H2O), Ionic Solids (NaCl, MgO), Covalent Network Solids (Diamond), and Metallic Solids (Cesium)?
What type of solids are classified by the type of particles, give an example of each; give an example.
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What is (7, 3, -1, +1/2)
What are the quantum numbers for the last electron to be added to complete the ground state configuration of Uranium (U)?
Hint: Start with the noble gas configuration of U. |
What is Sr, Tl, Si, F?
The order for these elements in electronegativity in INCREASING order is (F, Si, Kr, Sr, Tl)
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What is...
a) See: https://lightcat-files.s3.amazonaws.com/problem_images/95826d0b01981f11-1550851740859.jpg b) 8 shared and 28 unshared electrons; 4 covalent bonds c) Nonpolar (no net dipole)
Question: Given XeF4,
Draw the Lewis Dot Structure. What is the number of shared, unshared, and covalent bonds in this molecule? What is the polarity of this molecule? |
What is q=8.44kJ?
Use q = n(ΔH).
Calculate the energy required to melt 25.3 g of ice at ice at 0°C. For water, the enthalpy of fusion is 6.01 kJ/mol.
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Ammonia is a molecular solid, so it is held together by intermolecular forces. The strongest intermolecular force for NH3 is hydrogen bonding. In general, molecular solids have very low melting points.
:Silica is a covalent-network solid, so it is held together by covalent bonds. The vast array of covalent bonds means SiO2has a high melting point.
State the type of bonding or force holding together each of the following solids and indicate whether the melting point is low or high. Ammonia, SiO2
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