Well if you mean 'What is the most valuable metal' I believe it is currently Platinum.
Gold
metal and non-metal elements.
metal and non metal elements
Any metal that is not an alloy of a metal with other elements (metals, metalloids, or nonmetals) is a pure element. All of the metals listed on the Periodic Table are pure elements.
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Gold
Gold
metal and non-metal elements.
The superlative for costly is "most costly" or "costliest."
Costliest is an adjective. It is the superlative of costly.
Platinum is costlier although gold is a symbol of wealth and money and many people believe that gold is the most costliest metal.
metal and non metal elements
Are Non-metal elements used in computers
Dodge tomahawk is the costliest bike and fastest bike too...
"Metallic" is not a metal. But elements that are metals, are metallic.
Any metal that is not an alloy of a metal with other elements (metals, metalloids, or nonmetals) is a pure element. All of the metals listed on the Periodic Table are pure elements.
Compounds by definition are not elements at all and therefore cannot be metal elements.