Name the Metal which is non-lustrous.

Answer: Sodium is the metal which is non- lustrous.

A metal’s shine comes from the presence of free electrons, which provide the “mirroring” effect. Because sodium is a highly reactive metal, it is not found naturally on Earth. Iodine is a non-metal that has a shiny appearance. A glossy nonmetal is one that shines.

Sodium (Na) is a chemical element in the periodic table’s alkali metal group (Group 1 [Ia]). Sodium is a silvery-white soft metal. Sodium is the most common alkali metal and the world’s sixth most plentiful element, accounting for 2.8 percent of the planet’s crust.