Phosphorus is a solid not gas as everyone thinks.
Yes, phosphorus is a solid chemical element.
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Phosphorus has a hardness of 2.5 on the Mohs scale of hardness. It can be easily scratched by harder minerals like calcite or fluorite.
Limonite has a hardness of about 4 to 5.5 on the Mohs hardness scale.
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.
The fourth mineral on Mohs' Scale of Hardness is fluorite. It has a hardness of 4 on the scale.
The Mohs Scale of Hardness determines the hardness of minerals by scratching them with commonly found objects. The minerals are assigned a number which corresponds to their hardness; higher numbers indicate higher hardness.
The hardness is 6 on the MOHS scale