Where was sodium first found at?
Sodium is a metal that has never been found, since it is extremely reactive and turns into a compound very quickly. Sodium metal can be made, but since it is so reactive, it is dangerous to deal with (it explodes). In nature, it would never last long enough to be ‘found’. I assume you mean salt, which is typically sodium chloride. That is common is water and was probably first ‘found’ in a dried river bed or lake. But salt is so extremely common that there is no way to know when or where it was first found. You can be sure that it was found well before man knew how to write. If you believe in evolution, you can safely assume that it was found long before man even existed and would likely have been ‘found’ by the first land animals who were able to get to places where water dries out. You could even claim that without dissolved salt in water, life never would have started.