While there is no such thing as 100 percent safe, having nuclear energy is much safer than you think. It's thousands of times safer than conventional coal and other fossil-fuel-derived energy, not to mention the specter of environmental disaster from continued use of carbon-based energy sources.
Yes it is used , hope this helps
Mg+Cl2--> MgCl2
Magnesium plus chlorine equals magnesium chloride
This is a basic orbital diagram for carbon
Maybe. Like in hitch hikers guide to the galaxy, I need to consult with the super computer