Question

metals are used in many products because of the characteristic properties that most metals share. which properties of the metal tungsten make it useful in the thin, glowing filaments of light bulbs?
tungsten is electrically conductive, ductile, and opaque.
tungsten is ductile, is malleable, and has a high luster.
tungsten is ductile, has a high melting point, and is electrically conductive.
tungsten has a high luster, has a high melting point, and is silver in color.

Explanation:

To determine the correct properties of tungsten for light bulb filaments, we analyze each option:

• Opaque, high luster, and color (like silver) are not relevant for a filament that needs to conduct electricity and withstand high temperatures without melting.
• For a light - bulb filament, the metal must conduct electricity (to allow current flow), be ductile (to be drawn into thin wires), and have a high melting point (so it doesn't melt when heated by the electric current). Tungsten is known for its high melting point, electrical conductivity, and ductility, which are essential for its use in filaments.

Answer:

Tungsten is ductile, has a high melting point, and is electrically conductive.