2. “Elements which are similar as regards their chemical properties have atomic weights which are either of nearly the same value (e.g., platinum, iridium, osmium) or which increase regularly (e.g., potassium, rubidium, cesium).” 3. “There is nothing in this world that I fear to sa...
molybdenum, nickel, osmium, palladium, platinum, rhenium, rhodium, ruthenium, tungsten etc) that are mined from Earth's crust, came originally fromasteroidbombardement that hit Earth after the crust had cooled. Although asteroids and Earth agglomerated from the same materials, Earth's stronger gra...