Original media from our community.
Potassium chunks under oil. Even then, the small amount of air caused a purple-white layer of oxidation to form on the surfaces.
Cubes of slightly brassy |li|, gray |na|, and silvery |k| metal in ampoules under inert gas. These are extremely reactive metals, so getting them into these precise shapes is incredibly difficult!
The Alkali Metals group: |li| rod, |na|, |k|, |rb|, and |cs|. All samples are inside ampoules, because these elements are extremely reactive to the |o| in air.
Heavily oxidized chunk of Potassium metal in a bottle of oil, itself in what appears to be a sealed bag
Ampoule of Potassium
Potassium metal safely encased in a cube-shaped glass ampoule about 1 cubic cm in size
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