Most metals look silver because the outer electrons are free to move around rather than being tightly bound to individual atoms. When light hits the surface, this sea of “free” electrons absorbs and re-emits all wavelengths of light equally, making your eyes perceive the metal as a silvery white.
by izzyblanco123
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Copper and Gold are exceptions because they selectively absorb wavelengths of light. In copper, electrons absorb more of the shorter wavelengths (blue and violet light), so the reflected light is richer in reds and oranges, giving it that warm reddish colour. Gold does something similar, but its electrons absorb blue light in a slightly different way, causing the reflected light to appear yellow. This selective absorption happens because of subtle differences in their electron energy levels which affects how they interact with photons.
Isn’t it called ionic bonding
This is also why metal is conductive.
And why hydrogen can gain properties of metal under certain circumstances(its electrons are freed up)
Have you got a source for this please?
Free? Can I have some?
Funn detail: metals like gold and copper aren’t silver because their electron transitions absorb specific visible wavelengths—relativistic effects in gold even shift it toward that yellow color.
That’s what they’d like you to believe
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What color are they really then?
Is there an equation to predict the colour of a metal?
But why do they all taste so different? Copper tastes way different than iron or mercury.
And here I thought Metal looked like Metal – how crazy am I?