In the blockbuster film hit Back to the Future, which came out 30 years ago, and its sequels, this, 2015, is the future - the year Marty McFly and Doc Brown zoomed off to visit in their souped-up flying DeLorean.
Metallic bonding in magnesium. If you work through the same argument with magnesium, you end up with stronger bonds and so a higher melting point. Magnesium has the outer electronic structure 3s 2. Both of these electrons become delocalised, so the sea has twice the electron density as it does in sodium. The remaining ions also have twice the charge (if you are going to use this particular view of the metal bond) and so there will be more attraction between ions and sea.
Characteristics: Uses: Magnesium is a silvery-white, low density, reasonably strong metal that tarnishes in air to form a thin oxide coating. Magnesium and its alloys have very good corrosion resistance and good high temperature mechanical properties.The metal reacts with water to produce hydrogen gas.When it burns in air, magnesium produces a brilliant white light. The brilliant light it produces when ignited is made use of in photography, flares, pyrotechnics and incendiary bombs.agnesium compounds such as the hydroxide (milk of magnesia, Mg(OH 2)), sulfate (Epsom salts), chloride and citrate are used for medicinal purposes.