Definition
Noble gasses: Any of the elements occupying group 0 (18) of the periodic table. They were long believed to be totally unreactive (due to their full outer shell) but finally we got them to react and now the elements xenon. krypton, and radon are now known.
A brief history
As you may have read up above 'Noble Gasses' were known not to react with other elements in fact when they do finally react with other elements the combination only last for a split second.
Noble gasses: Any of the elements occupying group 0 (18) of the periodic table. They were long believed to be totally unreactive (due to their full outer shell) but finally we got them to react and now the elements xenon. krypton, and radon are now known.
A brief history
As you may have read up above 'Noble Gasses' were known not to react with other elements in fact when they do finally react with other elements the combination only last for a split second.