Nearly all, 99.988%, of tantalum found in nature is stable. The natural radioactive isotope, 180mTa, accounts for 0.012% of it, and is believed to have a very long half life of about 1,200,000,000,000,000 years. Like all elements, tantalum has synthetic radioactive isotopes.
All terbium ordinarily found in nature is of a single stable isotope. Like all other elements, there are synthetic radioactive isotopes of terbium.
None of the thallium ordinarily found in nature is radioactive. Like all elements, there are synthetic radioactive isotopes of thallium.
Terbium (Tb) is found in many minerals such as xenotime, euxenite, and gadolinite.See more information at related link listed below:
Yttrium (symbol Y) is a metal. It belongs to transition metal series.
Terbium
Ytterbium, Erbium, and Terbium are all named after Ytterby, Sweden.
Tb is the symbol for terbium. it is a f-block element
Curium is a metal. It belongs to actinides.
terbium is synthetic i believe
Terbium has 65 electrons
Terbium is flammable and burns with a yellowish flame.
The symbol for the element Terbium is Tb
The atomic mass of terbium is 158.92
Green trichromatic
The atomic weight of terbium is 158.93 amu.
Terbium is in the period 6 and is a member of lanthanoids family.
Scandium is element 21, and terbium is element 65.
Berkelium has the electronegativity 1,3 in the L. Pauling scale; terbium has an electronegativity of 1,1. Berkelium is more reactive than terbium.
The element terbium was discovered in 1843 by Carl Gustaf Mosander, a chemist living in Sweden. Terbium has the symbol Tb and its atomic number is 65.