

Valence Electrons and Lewis Structures
Interactive Video
•
Chemistry
•
9th - 10th Grade
•
Practice Problem
•
Hard
Mia Campbell
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the total number of valence electrons in the ASO2- ion?
22
20
18
16
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which element is placed at the center of the ASO2- Lewis structure?
Nitrogen
Oxygen
Sulfur
Arsenic
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many oxygen atoms are present in the ASO2- ion?
One
Four
Two
Three
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of placing a pair of electrons between atoms in the Lewis structure?
To change the element
To decrease the number of electrons
To increase the number of electrons
To form a chemical bond
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many valence electrons are used to complete the octets on the oxygen atoms?
16
14
12
10
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What adjustment is made to ensure the central arsenic atom has an octet?
Change the central atom
Add more electrons
Form a double bond
Remove electrons
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of moving two electrons to form a double bond in the ASO2- structure?
The structure becomes unstable
Arsenic gains an octet
The ion becomes neutral
Oxygen loses its octet
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