SM is the element symbol of chemical element 素. 种 is a metal element, the chemical symbol is SM, and the atomic order is 62. This is a medium -hard silver -white metal, which is easy to oxidize in the air. As a typical element series of components, 钐 usually assumes the oxidation state 3. The most common is SMO, SMS, SMSE and SMTE.学 There is no significant biological effect, only mild toxicity. Mine distribution: This and other rare earth elements are in the lonely stone sand. The rare earth elements contained in the lone stone, as well as calcium and pupa, distributed in the river sand and Florida seas of the Florida coastal sand in India and Brazil. Essence The mass scores of rare earth elements in the lonely stone sand are usually 50%, of which 2.8%of them. In addition, 存 also exists in fluorocarbon ore, while fluorocarbon mines are mostly distributed in South California, and ion exchanges are needed to separate ion exchanges from its minerals.
SM is the element symbol of chemical element 素.
种 is a metal element, the chemical symbol is SM, and the atomic order is 62. This is a medium -hard silver -white metal, which is easy to oxidize in the air. As a typical element series of components, 钐 usually assumes the oxidation state 3. The most common is SMO, SMS, SMSE and SMTE.学 There is no significant biological effect, only mild toxicity.
Mine distribution:
This and other rare earth elements are in the lonely stone sand. The rare earth elements contained in the lone stone, as well as calcium and pupa, distributed in the river sand and Florida seas of the Florida coastal sand in India and Brazil. Essence
The mass scores of rare earth elements in the lonely stone sand are usually 50%, of which 2.8%of them. In addition, 存 also exists in fluorocarbon ore, while fluorocarbon mines are mostly distributed in South California, and ion exchanges are needed to separate ion exchanges from its minerals.