50.1 MB (50.0 MB compressed)
3625 x 4834 pixels
30.7 x 40.9 cm ⏐ 12.1 x 16.1 in (300dpi)
ANDREW LAMBERT PHOTOGRAPHY / SCIENCE PHOTO LIBRARY ANDREW LAMBERT PHOTOGRAPHY / SCIENCE PHOTO LIBRARY
Potassium burning in air. Potassium (K) is a soft, highly reactive, alkali metal. In air it will burn with a brilliant flame to form potassium dioxide (or potassium superoxide, KO2). Potassium is the seventh most abundant metal in the Earth's crust, but is not found in its elemental form.
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