posted by chelsea .
rubidium is the fourth element in group 1. predict the following properties of rubidium and its compunds:
C. reaction with water
D. appearance and solubility of rubidium chloride
E. electrical conductivity
Look at the properties of the other elements that you know in group 1. Rb should be similar. For example, D. I now NaCl is a white crystalline solid that is soluble in water. I would expect RbCl to be the same.
if i am wrong correct me- it is very hard to cut
its reaction with water is vigorous
its appearance-stored in oil white solid lump
The reaction with water is vigorous.
The appearance stored in oil should be a silvery solid
but the first one is not correct. Sodium is a soft silvery metal. I would expect Rb to be a soft silvery metal also. It is easily cut into small pieces with a pocket knife.