Californium has a silvery metallic appearance.
it looks like gas,
solid
The appearance of francium is not known.
It is a shiny silver colored metal
Argon is a colorless, odorless gas in its normal state. It is a noble gas that is not reactive with other elements.
Californium is a synthetic element that is not commonly found in nature, making it difficult to create a 3D molecular model of its structure. However, californium is typically depicted as a metallic element with a silvery appearance in its elemental state. Its atomic structure may be represented in a 3D model showing the arrangement of its protons, neutrons, and electrons within the nucleus and electron shells.
I'd look at some of the radioactive heavy elements. For example Berkelium, Californium, and Americium.
Neptunium is a solid metal with a metallic appearance.
Titanium in its normal state is a silver-colored metal with a shiny surface. It is lightweight, strong, and resistant to corrosion.
It is a colorless noble gas, so you can't really see it.
Calcium in its normal state is a soft, silver-white metal that is quite reactive with air and water. It is typically found in the form of calcium carbonate in nature, as in limestone and chalk.
At its normal state, copper appears as a reddish-brown metal with a shiny metallic luster. It is ductile and malleable, making it easy to shape into various forms.