T-Z

Thorium, Chemical Element

Thorium is a member of the actinide family. The actinide elements are located in Row 7 of the periodic table.

Thulium, Chemical Element

Thulium was given its name in honor of the earliest name for Scandanavia, Thule. The element was discovered and named by Swedish chemist Per Teodor Cleve (1840-1905) in 1879.

Tin is a highly workable metal that was once as valuable as silver for jewelry, coins, and special dishware. Today it is used as sheets in the construction of buildings and roofs, for soldering or joining metal parts, for storage containers, and in alloys like bronze and Babbitt metal.

Titanium, Chemical Element

Titanium is found in the middle of the periodic table. The periodic table is a chart that shows how chemical elements are related to one another.

Transfermium Elements, Chemical Element

The term "transfermium" describes the elements with atomic numbers greater than 100. Fermium is element 100, so transfermium means "beyond fermium." The transfermium elements are grouped together for a number of reasons.

Tungsten, Chemical Element

Tungsten is a transition metal. The transition metals are a group of elements found in the middle of the periodic table.

Uranium, Chemical Element

Uranium is the heaviest and last naturally occurring element in the periodic table. The periodic table is a chart that shows how chemical elements are related to each other.

Vanadium, Chemical Element

Vanadium is a transition metal that lies toward the middle of the periodic table. The periodic table is a chart that shows how chemical elements are related to one another.

Xenon, Chemical Element

Xenon is a noble gas. The term noble gas is used to describe the elements in Group 18 (VIIIA) of the periodic table.

Ytterbium, Chemical Element

Ytterbium belongs to the lanthanide family. The lanthanides make up Row 6 of the periodic table.

Yttrium, Chemical Element

Yttrium is one of four elements named for the same small town of Ytterby, Sweden. The other three elements are erbium, terbium, and ytterbium.

Zinc, Chemical Element

Zinc is a transition metal that occurs in the center of the periodic table. The periodic table is a chart that shows how chemical elements are related to each other.

Zirconium, Chemical Element

Compounds of zirconium have been known for centuries. Yet, the element itself was not recognized until 1789.