Thorium (Th) is a member of the actinoids family.
Thorium is a member of actinoids family.
Thorium is a member of the actinoids family.
Thorium is a member of the actinoids family and is placed in period 7.
Uranium and thorium are in the actinoids family.
Thorium is a member of the actinoids family.
The chemical name thorium is unique.
Also thorium.
Some thorium ores are monazite, thorianite, thorite.
Thorium is a member of the actinoids family; it is also placed in the period 7 of the periodic table of Mendeleev.
Thorium is a member of the actinoids family; the atomic number is 90.
Thorium is generally known by its chemical name "Thorium." However, it may also be referred to as "Th" on the periodic table.
Thorium carbide is a systematic unique name in chemistry.