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Cobalt

News Cobalt

  • Modern alchemists are making chemistry greener

    Ancient alchemists tried to turn lead and other common metals into gold and platinum. Modern chemists in Paul Chirik's lab at Princeton are transforming reactions that have depended on environmentally unfriendly precious metals, finding cheaper and greener alternatives to replace platinum, rhodium a more

  • Lego-like chemical building blocks self-assemble into catalyst for hydrogen fuel cells

    What's better than platinum? In hydrogen fuel cells, the answer is cofacial cobalt porphyrins. It's a mouthful to say, and if you're not a chemist, you've probably never heard of these compounds before. But these molecules -- which are great at facilitating a chemical reaction that's needed to produ more

  • The apparent inner calm of quantum materials

    Transitions between different phases of matter are part of our day-to-day lives: when water freezes, for example, it passes from liquid to solid state. Some of these transitions may be of a different kind, resulting from so-called topological excitations that force all the particles to act in unison more

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Videos Cobalt

Cobalt

Check out some samples of cobalt, and learn about its role in colour televisions. more

Infographics Cobalt

Colours of Transition Metal Ions in Aqueous Solution

This graphic looks at the colours of transition metal ions when they are in aqueous solution (in water), and also looks at the reason why we see coloured compounds and complexes for transition metals. This helps explain, for example, why rust (iron oxide) is an orange colour, and why the Statue of L more

Testing for Cations

A previous post looked at the colours of transition metals, and the origin of their colours – this graphic, on the other hand, looks at how transition metals (and some non-transition metals) can be identified by the precipitates they form with sodium hydroxide and ammonia solutions. I’m going to kee more

Transition Metals

This graphic looks at some general properties of the transition metals – I had a little less space to work with than with the previous graphics, on account of the large number of elements that the transition metals encompass, but hopefully what’s included is still of use. more

Definition

Cobalt

Cobalt Cobalt () is a hard, lustrous, silver-grey metal , a chemical element with symbol Co. It is found in various ore s, and is used in the preparation of magnetic , wear-resistant, and high-strength alloy s. Its compound s are used in the p ... more

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