# Tag Info

Accepted

### Why is fluorine a gas, but lithium isn't?

A lithium atom has one valence electron, easily lost (shared), so it is connected to other atoms by a metallic bond. This is a bit like the shell game where a pea (electron) is hidden under a walnut ...
• 24.4k
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### Why do the alkali metals form different products upon combustion in air?

Since I will deal with all of the alkali metals in this answer, I think the question should also be broadened. There is no point in covering one single metal (sodium) without touching the others since ...
• 66.4k
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### What metals aren't dissolved in/attacked by aqua regia?

Keep in mind The answer will depend upon the reaction conditions. Most importantly, physical state of the metal: porosity, degree of comminution; temperature; mechanical aggravation of metal surface ...
• 6,861

### Why does zinc react with sodium hydroxide?

Indeed, $\ce{Zn}$ is lower than $\ce{Na}$ in activity series of metals, so the following reaction won't take place $$\require{cancel}\ce{Zn + 2NaOH \cancel{→} Zn(OH)2 + 2Na}$$ Remember, however, ...
• 18.5k
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### Could milk rust a steel teaspoon?

Technically, even simple water can cause rust, so nothing surprising here. However, spoilage of milk most probably produced a lot of organic acids (lactic acid and similar) which can speed up any ...
• 5,248
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### Can metals have a net negative charge

These species usually do not exist in nature, but they can be synthesized. Silver has been reduced in liquid ammonia to give $\ce{Ag-}$. A lot of anionic metal carbonyl complexes $\ce{M(CO)_{n}^{m-}}$...
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### Gaseous metals?

No, gaseous metals do not retain metallic bonds, nor metallic conductivity, nor luster, nor any other metallic properties. They are no different from other gases. True, they typically require pretty ...
• 30k
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### Why do only some metals make protective oxide layers?

The simple answer is that metals which form sufficiently insoluble oxide layers stifle the very process which caused the oxide layer in the first place. It's not just a matter of energy of formation ...
• 12.6k
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### Why is gold unreactive when only one electron is in the outer shell?

First off, gold does react. You can form stable gold alloys and gold compounds. It's just hard, mostly for reasons explained by the other answer The reason bulk gold solid is largely unreactive is ...

### How toxic chemically is plutonium (Pu), neglecting the radioactive damage?

The toxicity is primarily due to radioactivity and to absorption by the body, where that radioactivity can act internally. There is, "significant deposition of plutonium in the liver and in the &...
• 24.4k
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### What causes the iridescent colour in laboratory grown bismuth?

The colour is from a thin film of bismuth(III) oxide that forms on the surface if the crystals are formed in air. At the elevated temperatures used to melt bismuth, the oxide forms quite quickly. The ...
• 12.6k

### Why did the salt on the skin of my turkey react with the aluminum foil it was touching?

If you don't mind, I'll start with a more colloquial and hopfully not to lengthy explanation: Precious metals, such gold, do not corrode under "household conditions", others, such as iron or ...
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### How to think of solvated electrons?

The analogy with a proton is actually a good one if you are careful to remember that an electron is nearly 2000 times lighter than a proton. What does that mean? It means that despite the fact that an ...
• 12.6k

### How is aqua regia stored?

How is aqua regia stored as it dissolves all metals? No one stores aqua regia for extended periods of time, because it decomposes rapidly, yielding volatile products that escape from the solution ...
• 18.1k
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• 4,435

### Are there colorful metals besides gold and copper?

There is no element other than gold and copper with similar colors; see http://periodictable.com/Properties/A/Color.html. There are many metal alloys that are red and golden, such as phosphor bronze,...
• 24.4k