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Chemistry: The Periodic Table and Elements

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Chemistry: The Periodic Table and Elements

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Questions and Answers

Which group of elements is known as the alkaline earth metals?

Group 1A

Group 7A

Group 2A (correct)

Group 8A

What is the range of atomic numbers for elements in the lanthanide series?

Z = 58 to Z = 64

Z = 58 to Z = 71 (correct)

Z = 72 to Z = 80

Z = 90 to Z = 103

Which of the following statements about the periodic table is incorrect?

The horizontal rows are referred to as periods.

Group 1A contains the halogens. (correct)

Group 8A elements are called noble gases.

Group 3B has branching series in the sixth and seventh periods.

What series do elements thorium (Z = 90) to lawrencium (Z = 103) belong to?

<p>Actinide series</p> Signup and view all the answers

Which of the following groups includes noble gases?

<p>Group 8A</p> Signup and view all the answers

Study Notes

Periodic Table

The periodic table is a chart that organizes elements by their atomic number and properties.
The vertical columns of the periodic table are called Groups and are numbered 1 to 8.
"A series" elements are representative or main group elements.
"B series" elements are transition or subgroup elements.
Group 1A metals are called the alkali metals.
Group 2A metals are called the alkaline earth metals.
Group 7A elements are called the halogens.
Group 8A elements are called the rare gases or noble gases.

Elements

Each horizontal row of the periodic table is called a period.
The Lanthanide series consists of elements cerium (Z = 58) to lutetium (Z = 71).
- The lanthanide series is also sometimes called the rare earth series.
The Actinide series consists of elements thorium (Z = 90) to lawrencium (Z = 103).

Electron Configuration

1s is the first energy level in the electron shell.

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Description

Explore the fundamentals of the periodic table, including its organization by groups and periods. Learn about the properties of various elements, including alkali metals, alkaline earth metals, and noble gases. This quiz will enhance your understanding of electron configuration and the significance of the lanthanide and actinide series.