The strongest rock on Moh's scale of hardness is the diamond at 10 and the weakest rock is Talc. Anything lighter than Talc would not be considered a rock. If you want to know other rock's hardness es you'll have to look at Moh's scale of Hardness
River rock can be composed of any rock type, or any combination of rock types.
an igneous rock.
Sedimentary rock. Eg Rock salt.
A Metamorphic rock.
limestone or sandstone
The weakest type of bridge would be a board across gully.
London dispersion forces are the weakest type of chemical bonding.
rock(in bloodtusk ravine)
Torkoal is the weakest Fire Type Pokemon Ash has.
The weakest Rock in the world Is most Likely Shale Rock As it isint really a solid rock as much as Layer (plates) of rock
acid
Gamma radiation is the strongest, followed by beta, followed by alpha. So, in answer to your question; alpha is the weakest type of radiation :)
on outer ear
ikr
Hydrogen
The strongest rock on Moh's scale of hardness is the diamond at 10 and the weakest rock is Talc. Anything lighter than Talc would not be considered a rock. If you want to know other rock's hardness es you'll have to look at Moh's scale of Hardness