viernes, 6 de marzo de 2015

                                                Silver


The silver is a chemical element of  atomic number 47 located in the group 11 the periodic table of elements is simbol is og  poceded  latin argertine withe of bright metal is whithe on trastional Pure is a moderately soft a bitle harder than gold metal 2.53 on mohs hardness scale white when polished acquires a brigt luster and reflects 95 % othe light that strikes it  its density is 10 . 5 times that of water silver quality purity expresed as pured silver parts per 1000 parts of total metal comercial silver has a purity of  999 low o 999. 
                                   





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