What is the composition of a lithium atom as described in the video?

Valence Electrons and Atomic Structure

Interactive Video
•
Chemistry, Science, Physics
•
6th - 8th Grade
•
Hard

Patricia Brown
FREE Resource
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8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Three protons, four neutrons, and two electrons
Three protons, four neutrons, and three electrons
Two protons, three neutrons, and three electrons
Four protons, three neutrons, and two electrons
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Where is the valence electron located in a lithium atom?
In the third layer
In the first layer
In the nucleus
In the second layer
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What role do valence electrons play in chemical reactions?
They define the number of protons
They are involved in chemical bonding
They are responsible for the atomic number
They determine the atomic mass
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a single dot in the electron dot diagram represent?
The number of valence electrons
The number of neutrons
The number of protons
The total number of electrons
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many valence electrons does beryllium have?
Four
Three
Two
One
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the electron configuration of boron in terms of its shells?
Three electrons in the first shell, two in the second
One electron in the first shell, four in the second
Two electrons in the first shell, two in the second
Two electrons in the first shell, three in the second
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many dots are shown in the electron dot diagram for boron?
Two
Four
One
Three
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance of the electron dot diagram?
It displays the number of protons
It represents the atomic mass
It indicates the number of valence electrons
It shows the total number of electrons
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