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'''Indium''' is an [[element]] in the "poor metals" class (beyond the transition metals, before the nonmetals) of the [[periodic table of the elements|periodic table]].  It is soft and silvery-white. It is stable in air and water, but dissolves in acids.  It has a specific gravity of 7.310.  It has two stable isotopes (actually one, but another one has a [[half-life]] of over 10¹⁴ years).

'''Indium''' is an [[element]] in the "poor metals" class (beyond the transition metals, before the nonmetals) of the [[periodic table of the elements|periodic table]].  It is soft and silvery-white. It is stable in air and water, but dissolves in acids.  It has a specific gravity of 7.310.  It has two stable isotopes (actually one, but another one has a [[half-life]] of over 10¹⁴ years).

Indium was discovered [[spectroscopically spectroscope]] (many 19th century element discoveries were made this way) while searching for thallium in zinc ores.

Indium was discovered [[spectroscope | spectroscopically]] (many 19th century element discoveries were made this way) while searching for thallium in zinc ores.

[[Category:Elements]]

[[Category:Elements]]