9 on the mohs scale
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Iodine is not recognized as a mineral, and therefore is not assigned a number on the Mohs Scale of mineral hardness.
Kaolinite has a hardness of 2 on the Mohs scale, which means it is relatively soft and can be easily scratched.
A fingernail has a hardness of around 2.5 on the Mohs hardness scale, which means it can be easily scratched by materials with a higher hardness level.
Aluminum Oxide is roughly 8.5 - 9.0 on the hardness scale.
Pretty soft. Hardness is around 2.5 to 3, depending on the aluminum alloy.
Aluminum is a relatively soft metal compared to others like steel or titanium. Its hardness can be increased through alloying or heat treatment processes to improve its strength and durability for specific applications. Pure aluminum has a Mohs hardness of 2.5-3, which means it is easily scratched by harder materials.
1.2 mohs
Corundum typically has a smooth and hard texture. It is a naturally occurring crystalline form of aluminum oxide and is known for its hardness, which is second only to diamond on the Mohs scale.
Diatomite has a hardness of around 5.5 on the Mohs scale of hardness.
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9 on the mohs scale
The hardness of uranium is 6 on the Mohs scale; not so hard.
On the Mohs scale, 6.5 to 7.0.
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Glass is about 6-6.5