Nguyễn Xuân Sơn
(NguyenXuanSon)
New Member
de giup cac ban hoc hoa hoc tot hon, xin gioi thieu mot trang web lam kha cong phu
http://www.shef.ac.uk/chemistry/orbitron/AOs/2s/index.html
http://www.webelements.com/webelements/compounds/text/Ti/Br3Ti1-13135314.html
xuan son
http://www.shef.ac.uk/chemistry/orbitron/AOs/2s/index.html
http://www.webelements.com/webelements/compounds/text/Ti/Br3Ti1-13135314.html
xuan son