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Chapter 01 of 5

The Softest Solid

Unveiling the raw, volatile nature of the third element.

1. Atomic Roots

   The Third Element

   Lithium sits at slot number three on the periodic table, right after hydrogen and helium. It is the lightest solid element in the known universe.

2. Material Density

   Lighter than Water

   Lithium’s density is about half that of water. If you dropped a chunk of it in oil, it wouldn't sink—it would float right on the surface.

3. Tactile Surprise

   The Butter Knife Metal

   Unlike steel or copper, pure lithium is incredibly soft. You can slice through a solid block of it using a standard kitchen butter knife.