Silicon is the 2nd most plentiful element in earth’s crust. It had been uncovered in 1823 by Jöns Jacob Berzelius. Silicon has huge uses including producing of ceramic, glass, artificial polymers and is particularly A necessary part of built-in circuits. Paget's disorder (a bone illness): Use strontium with warning. The https://american-glass-lined-duct79247.blogolenta.com/32822499/mohs-hardness-scale-for-dummies