Gold is the most malleable element, but what's the science behind it?
Gold is the most malleable element, according to Mike Bullivant, a chemist at The Open University in Milton Keynes, England. It's so malleable, it can be hammered to be thinner than a wavelength of visible light, noted a 1977 study from the University of Leeds in England. But why is gold so malleable?
In contrast, there are multiple definitions of hardness and softness, depending on how one tests a material's strength. Based on the Mohs scale, which measures how well a material resists scratching, the softest metal is cesium, which is soft enough to be cut with a butter knife, according to Guinness World Records.
In addition, gold is a metal. This means its atoms are held together by metallic bonds, in which the outermost electrons of each atom are free to move around the overall structure of the material."This delocalized electron cloud allows the atoms to slide past each other easily, making the metal malleable," Fixler said.—Why does wood catch fire, but metal doesn't?
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