-ium (Modern Latin: a suffix used to form Modern Latin scientific names; or a modern suffix used to form names of metallic elements [chemistry]).

For example, most of the chemical elements end with "ium" to express the Modern Latin suffix; although there are some that end with "ine”, or other suffixes, or no special endings:

actinium, americium, barium, berkelium, beryllium, cadmium, calcium, californium, cerium, cesium, chromium, curium, dubnium, dysprosium, einsteinium, erbium, europium, fermium, francium, gadolinium, gallium, germanium, hafnium, hassium, helium, holmium, indium, iridium, lawrencium, lithium, lutetium, magnesium, meitnerium, mendelevium, neodymium, neptunium, niobium, nobelium, osmium, palladium, plutonium, polonium, potassium, praseodymium, promethium, protactinium, radium, rhenium, rhodium, rubidium, ruthenium, rutherfordium, samarium, scandium, seaborgium, selenium, sodium, strontium, technetium, tellurium, terbium, thallium, thorium, thulium, titanium, uranium, vanadium, ytterbium, yttrium, zirconium

Further discussions of these elements may be found under the title Chemical Elements Chart in this search list.