thallium

Table of Contents

Introduction References & Edit History Quick Facts & Related Topics

Images

Explore an interactive periodic table of the elements

first ionization energies of the elements

For Students

thallium summary

Read Next

Highway Night Traffic Portland, drive, driving, car, automobile.

What's the Difference Between Speed and Velocity?

Chemical equations Chemical reactions chemistry

How Do You Balance a Chemical Equation?

Illustration of molecules. (molecular, chemistry, science)

Why Is a Group of Molecules Called a Mole?

Abstract vector hi speed internet technology background

History of Technology Timeline

Binary Computer Code, Binary Code, Internet, Technology, Password, Data

How Does Wi-Fi Work?

Discover

Candles Burning On Table In Church

What Is the Most Widely Practiced Religion in the World?

Flags of the countries of the world (flagpoles).

How Many Countries Are There in the World?

"Landing of Columbus" by John Vanderlyn, oil on canvas; commissioned 1836/1837, placed 1847. In the rotunda of the U.S. Capitol, Washington, D.C. 12' x 18' ft. (3.66 m. x 5.49 m.) Christopher Columbus and members of his crew are shown on a beach

5 Unbelievable Facts About Christopher Columbus

NBA Lakers Celtics Finals Kevin Garnett shooting.

10 Great Sports Rivalries

Russian grand duchess Anastasia; undated photograph. (Anastasiya Nikolayevna, Tsar Nicholas II)

Did Duchess Anastasia Survive Her Family’s Execution?

Ahura Mazda - relief of the Zoroastrian god Ahura Mazda at the ancient ruins of Persepolis in Iran. Also known as Ormazd Zoroastrianism,

Which Religion Is the Oldest?

Chinese pictograph, calligraphy tablet of Huang Tingjian, a famous calligrapher in Ancient Song Dynasty. The background of Chinese cultural elements.

The World’s 5 Most Commonly Used Writing Systems

thallium: Facts & Related Content

Written and fact-checked by The Information Architects of Encyclopaedia Britannica

Facts

Also Known As	Tl

Photos

first ionization energies of the elements

See All Images and Interactives →

Topics

chemical element boron group element hydrogen carbon sodium nitrogen sulfur phosphorus boron iodine fluorine zinc

Dig Deeper: More Articles That Discuss This Topic

boron group element: Introduction

Key People

Crookes

Sir William Crookes

British chemist

Quiz

Concept artwork on the periodic table of elements.

118 Names and Symbols of the Periodic Table Quiz

Periodic Table of the elements concept image (chemistry)

Facts You Should Know: The Periodic Table Quiz