Straighterline chem 101 Graded Exam 3 with questions and answers

Graded Exam 3




Question 1
3+
Correct An aluminum ion, Al , has

4.60 points out Select one:
of 4.60
a. 13 protons and 13 electrons.
b. 27 protons and 24 electrons.
c. 16 protons and 13 electrons.
d. 13 protons and 10 electrons.
e. 10 protons and 13 electrons.



The correct answer is: 13 protons and 10 electrons.




Question 2
Correct Which of these atoms has the greatest electron a nity?

4.60 points out Select one:
of 4.60
a. S
b. P
c. Ga
d. Li
e. Cl



The correct answer is: Cl




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, Graded Exam 3




Question 3
Select the element with the least metallic character.
Correct

4.60 points Select one:
out of 4.60
a. Sn
b. Sr
c. Tl

d. Ge
e. Ga



The correct answer is: Ge




Question 4
Which of these choices is the electron con guration for the aluminum ion?
Incorrect

0.00 points Select one:
out of 4.60
a. 2 2
1s 2s 2p 3s
6 2

b. 2 2 6
1s 2s 2p 3s 3p
2 2

c. 2 2 6
1s 2s 2p 3s 3p
2 1

d. 2 2
1s 2s 2p
6

e. 2 2 6
1s 2s 2p 3s 3p
2 4



2 2 6
The correct answer is: 1s 2s 2p




Question 5
2 8
Correct An element with the electron con guration [noble gas]ns (n – 1)d has ___________ valence electrons.

4.60 points Select one:
out of 4.60
a. 2
b. 6
c. 8

d. 10
e. None of these choices is correct.



The correct answer is: 10




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