22 questions linked to/from Why is gold golden?
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### Why is gold even golden? [duplicate]

Bulk gold has a very characteristic warm yellow shine to it, whereas almost all other metals have a grey or silvery color. Where does this come from? I have heard that this property arises from ...
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### Are there colorful metals besides gold and copper?

Are there yellow metals besides gold? Are there metals with color different than yellow and grey/silver or reddish?
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### Why is gold unreactive when only one electron is in the outer shell?

I've been trying to answer my (high school) daughter's questions about the periodic table, and the reactivity series, but we keep hitting gaps in my knowledge. So I showed that the noble gases have a ...
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### Why does mercury have low melting and boiling points?

Many metals have relatively high melting and boiling points, but mercury has relatively low melting and boiling points. What are the possible reasons for this?
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### How fast do electrons move around the nucleus?

Electrons, as we all know, are incredibly small. Smaller things do tend to move faster, right? So exactly how fast considering how small they are? Also, does the electonegativity between two atoms ...
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### Why do the trends in reactivity not apply for francium?

Why is francium not included in the reactivity series? Why is potassium considered more reactive than francium? I know that reactivity increases down the group, but why does it not apply here?
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### Why is osmium the densest known element?

Why is osmium so dense despite there being heavier elements after it in the periodic table?
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### Relativistic effects and lanthanide contraction

So I understand than the lanthanide contraction is due to poor shielding of the 4f electrons which decreases the radius. However, if Im not mistaken the relativistic effects lead to a contraction of ...
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### Schrödinger's equation and spin quantum number

As spin quantum number cannot be derived from Schrödinger's equation, it cannot predict opposite electron spin. I mean to ask that how do we obtain the information conveyed by the spin quantum ...
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### Why do metals appear lustrous?

I came across a question asking me the reason for the lustrous appearance of many metals. The answer stated that it was due to the presence of free electrons in the metal. But I don't understand how ...
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### Why is the periodic table periodic?

I am not a chemist, but I am interested in Science in a general sense. Can anybody explain why the periodic table is periodic in nature? I would appreciate links for further reading.