Chem 103 Portage Learning Exam 5 |
Questions and Answers Graded A+
M5: Exam - Requires Respondus LockDown Browser + Webcam
Question 1 Show the determination of the charge on the ion formed by the Se 34 atom.
Answer:
Se34 (nonmetal = gain electrons) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p4 gain 2e
→ Se-2 Question 2
H = 2.1 I = 2.7
Li = 1.0 Be = 1.5 B = 2.0 C = 2.5 N = 3.0 O= 3.5 F = 4.0
Na = 1.0 Mg = 1.2 Al = 1.5 Si = 1.8 P = 2.1 S = 2.5 Cl = 3.0
K = 0.8 Ca = 1.0 Ga = 1.6 Ge = 1.8 As = 2.0 Se = 2.4 Br = 2.8
Using the electronegativities from the table above, show the determination of the polarity of each different type of bond in the following molecule
Answer: H-O bond electronegativity difference = 3.5 - 2.1 = 1.4 1.6 - 0.5 bond is Polar
N-O bond electronegativity difference = 3.5 - 3.0 = 0.5 1.6 - 0.5 bond is Polar
Question 3 On a piece of scratch paper, draw the Lewis structure for the PO 3-3 ion. Then choose the correct Lewis structure for PO 3-3 from the options listed
below.
Answer:
(A) Question 4
On a piece of scratch paper, draw the Lewis structure for the H 3PO3. Then choose the correct Lewis structure for H 3PO3 from the options listed below.
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