The term SILVERY-WHITE ELEMENT can refer to two elements on the periodic table: BARIUM (Ba) and Indium (In). BARIUM is a soft, silvery-white metal that is highly reactive and found in nature only in compounds. It is used in a variety of applications, including medical imaging and fireworks. Indium is also a soft, silvery-white metal that is relatively rare in the Earth's crust. It is used in electronics, semiconductors, and solar cells.