Sc. Chemical button 18 mm.

<div>   </div> <div> <strong> Atomic number       <span class = "Apple-tab-span" style = "white-space: pre;"> </span>21</strong></div> <div> <strong> Atomic mass         <span class = "Apple-tab-span" style = "white-space: pre;"> </span>44,956</strong></div> <div> <strong> Density, kg / m ? <span class = "Apple-tab-span" style = "white-space: pre;"> </span>       3000 </strong> </div> <div> <strong> Temperature </strong></div> <div> <strong> melting, ° С <span class = "Apple-tab-span" style = " white-space: pre; "> </span>           1539 </strong> </div> <div>   </div> <div> Scandium is a moderately soft, light rare earth metal with a silvery color with a yellow sheen. </div> <div> The element was discovered in 1879 year by the Swedish chemist Lars Nilsson. Nilsson named the element after Scandinavia. </div> <div> Since the mid 60s. Scandium oxide is used in ferrites for memory elements of some types of high-speed computers. Scandium oxide is obtained during the complex processing of bauxite, tin, uranium, tungsten and titanium ores. </div> <div>   </div>