It is a gas and it is neither.
Shiny
yes
Sodium is shiny, but it reacts very quickly with oxygen in the air to form lithium oxide, which is a dull black color.
Shiny
Argon is a colorless, odorless, and tasteless gas at room temperature and pressure. It is not inherently shiny or dull because it is a gas, but when condensed into a liquid or solid form, it would not exhibit a shiny appearance.
Chlorine, in its elemental form, is a diatomic gas at room temperature and pressure, so it does not have a surface. When chlorine is in a liquid or solid state, it appears as a yellow-greenish liquid or solid, and it does not have a shiny or dull surface.
dull
dull
shiny
Shiny
It is shiny.
Dull?
It could be dull or shiny. It doesn't matter.
High purity must be shiny, but if oxidized it will become dull
Iron is not beautiful but dull is an exaggerated word.
shiny
Lustrous is a term that defines a condition between dull and shiny.