The Mohs Hardness Scale measures the relative scratch resistance of minerals. It's based on a series of ten minerals, with talc (softest) at 1 and diamond (hardest) at 10.

Graphene is a two-dimensional material, meaning it is just one atom thick. This makes it very different from the minerals on the Mohs Scale, which are all three-dimensional.

While graphene is extremely strong and resistant to deformation, it's not easily compared to the minerals on the Mohs Scale.

Here's why:

* Scratch resistance is not the only factor: Graphene's strength is more accurately described in terms of its Young's modulus (a measure of stiffness) and tensile strength (resistance to stretching).

* Material type: Minerals on the Mohs Scale are crystalline solids with different crystal structures, while graphene is a single layer of carbon atoms.

* Testing methods: Mohs hardness is determined by scratching one material against another, which isn't a suitable method for graphene due to its thinness.

So, while graphene is incredibly strong, it's not directly comparable to the Mohs Hardness Scale.