

Understanding Lewis Structures and Valence Electrons
Interactive Video
•
Chemistry, Science, Other
•
9th - 10th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary difference between ionic and covalent bonds?
Both ionic and covalent bonds involve transferring electrons.
Both ionic and covalent bonds involve sharing electrons.
Ionic bonds involve sharing electrons, while covalent bonds involve transferring electrons.
Ionic bonds involve transferring electrons, while covalent bonds involve sharing electrons.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can you determine the number of valence electrons for main group elements?
By referring to the group number in Roman numerals.
By checking the element's period number.
By looking at the atomic number.
By counting the number of protons.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a Lewis structure, what do the dots around an element represent?
The number of protons.
The number of valence electrons.
The number of neutrons.
The atomic mass.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance of achieving eight valence electrons in a Lewis structure?
It signifies the element is a noble gas.
It shows the element is radioactive.
It indicates the element is a metal.
It represents a stable electron configuration.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the Lewis structure for sodium chloride, what charge does the sodium ion have?
+1
-1
+2
-2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When drawing the Lewis structure for magnesium oxide, what charge is assigned to the magnesium ion?
+1
+2
-1
-2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why are brackets used in Lewis structures for ionic compounds?
To highlight the number of neutrons.
To denote the charge of the ions.
To show the atomic mass.
To indicate the number of protons.
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