Caesium (or cesium) is the softest metal.
Lutemium
There is no metal by the name 'thompson'.
Chromium is the hardest metal; the Mohs hardness of osmium is 7 and the Mohs hardness of chromium is 8,5.
yes it is
titanium
tungsten
diamond
If you mean literally hard, then metal coins (found in many countries) would be the hardest.
sludge hammer
Tungsten.
Diamond. a very hard material that is the hardest substance ever, or at least discover to be the hardest substance on EARTH THAT IS
Not necessarily. The reactivity of a metal does not determine its ease of extraction. Factors such as the abundance in nature, the type of ore it is found in, and the technology available for extraction play a greater role in determining the ease of extraction.