CHEM 103 M5: EXAM- REQUIRES RESPONDUS LOCKDOWN
BROWSER PORTAGE LEARNING
● Due No due date
● Points 100
● Questions 10
● Time Limit 120 Minutes
● Requires Respondus LockDown Browser
Attempt History
Attempt Time Score
KEPT Attempt 2 5 minutes 77 out of 100
LATEST Attempt 2 5 minutes 77 out of 100
Attempt 1 24 minutes 57 out of 100
Score for this quiz: 77 out of 100
Submitted Sep 17 at 10:07am
This attempt took 5 minutes.
UnansweredQuestion 1
pts
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 K19 atom.
Your Answer:
K19 (metal = lose electrons) 1s2 2s2 2p6 3s2 3p6 4s1 lose 1e → K+1
Question 2
pts
Click this link to access the Periodic Table. This may be helpful throughout the exam.
H = 2.1
https://www.stuvia.com/user/Mboffin
, 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
Your Answer:
H-O bond 3.5-2.1 = 1.4 so bond is polar range = 1.6-0.5 for polar
Br-O bond 2.8-2.1 =0.7 so bond is polar range = 1.6-0.5 for polar
H-O bond electronegativity difference = 3.5 - 2.1 = 1.4 1.6 - 0.5 bond is Polar
Br-O bond electronegativity difference = 3.5 - 2.8 = 0.7 1.6 - 0.5 bond is Polar
Question 3
pts
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 CO3-2 ion. Then choose the
correct Lewis structure for CO3-2 from the options listed below.
https://www.stuvia.com/user/Mboffin
BROWSER PORTAGE LEARNING
● Due No due date
● Points 100
● Questions 10
● Time Limit 120 Minutes
● Requires Respondus LockDown Browser
Attempt History
Attempt Time Score
KEPT Attempt 2 5 minutes 77 out of 100
LATEST Attempt 2 5 minutes 77 out of 100
Attempt 1 24 minutes 57 out of 100
Score for this quiz: 77 out of 100
Submitted Sep 17 at 10:07am
This attempt took 5 minutes.
UnansweredQuestion 1
pts
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 K19 atom.
Your Answer:
K19 (metal = lose electrons) 1s2 2s2 2p6 3s2 3p6 4s1 lose 1e → K+1
Question 2
pts
Click this link to access the Periodic Table. This may be helpful throughout the exam.
H = 2.1
https://www.stuvia.com/user/Mboffin
, 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
Your Answer:
H-O bond 3.5-2.1 = 1.4 so bond is polar range = 1.6-0.5 for polar
Br-O bond 2.8-2.1 =0.7 so bond is polar range = 1.6-0.5 for polar
H-O bond electronegativity difference = 3.5 - 2.1 = 1.4 1.6 - 0.5 bond is Polar
Br-O bond electronegativity difference = 3.5 - 2.8 = 0.7 1.6 - 0.5 bond is Polar
Question 3
pts
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 CO3-2 ion. Then choose the
correct Lewis structure for CO3-2 from the options listed below.
https://www.stuvia.com/user/Mboffin
