Radon is a gas, no hardness.
metal
Any use, radon is a radioactive and very dangerous gas !
The hardness of Limonite is 4 t0 5.5 on the mohs hardness scale.
flint is a type of quartz, so it has a hardness of about 7 on the mohs scale of hardness
what is the difference between Shore-A Hardness & Barcol Hardness
The hardness of conundrum is 9 on the Moh's hardness scale
Mohs hardness: 6 Brinell hardness: 196 MPa.
The Mohs hardness of sodium chloride is 2,5.
no one likes your Hardness! hardness is not a good character.
It has no hardness.
Dolomite has a hardness of 3.5-4 on the Mohs scale of hardness.
Azurite has a hardness of 3.5 to 4 on the Mohs hardness scale.