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CHEM 103 Module 5 Exam Portage Learning Questions and
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CHEM 103 MODULE 5 : 202 5/
Question 1
Click this link to access the Periodic Table. This may be helpful throughout the exam. Show the determination of the charge on the ion formed by the Se 34 atom. Se 34 (nonmetal = gain electrons) 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^4 gain 2e → Se-^2
Question 2
Click this link to access the Periodic Table. This may be helpful throughout the exam. H = 2. Li = 1.0 Be = 1.5 B = 2.0 C = 2.5 N = 3.0 O= 3.5 F = 4.
**Na = 1.
Mg = 1. S = 2. Al = 1. Cl = 3. Si = 1.8 P = K = 0.
Ca = 1. Se = 2. Ga = 1. Br = 2. Ge = 1.8 As =** Using the electronegativities from the table above, show the determination of the polarity of each different type of bond in the following molecule H-C bond electronegativity difference = 2.5 - 2.1 = 0.4 <0. bond is Nonpolar C-O bond electronegativity difference = 3.5 - 2.5 = 1.0 1.6 - 0. bond is Polar
Question 3
Click this link to access the Periodic Table. This may be helpful throughout the exam. On a piece of scratch paper, draw the Lewis structure for the ClO -^1 ion. Then choose the correct Lewis structure for ClO -^1 from the options listed below. (B)
Question 4
3 3
On a piece of scratch paper, draw the Lewis structure for H 2 SO 3. Then choose the correct Lewis structure for H 2 SO 3 from the options listed below. (D)
Question 5
Click this link to access the Periodic Table. This may be helpful throughout the exam. Determine the electron geometry and explain your answer for the Si atom in SiH 4. The Si atom in SiH 4 has 4 groups of electrons around it in its Lewis structure, therefore, its electron geometry would be tetrahedral.
Question 6
Click this link to access the Periodic Table. This may be helpful throughout the exam. Determine the hybridization and explain your answer for the Si atom in SiH 4. The Si atom in SiH 4 has 4 groups of electrons around it in its Lewis structure, therefore, its hybridization would be sp^3.
Question 7
Click this link to access the Periodic Table. This may be helpful throughout the exam.
Determine the shape and explain your answer for HCN.
Arrange the following compounds in a vertical list from highest boiling point (top) to lowest boiling point (bottom) and explain your answer on the basis of whether the substance is Polar, Nonpolar, Ionic, Metallic or Hydrogen bonding: Ar, NH 3 , Zn, HBr, NaBr
Please note in this question you are not being asked to list BPs but the compounds in a list from highest to lowest BP on the basis of the type ofcompound. NaBr (ionic) = Zn (metallic)NH 3 (Hydrogen Bonding) (^) HBr (Polar) Ar (Nonpolar)
