Isotopes of elements have same atomic numbers and different mass number(atomic masses).
It is an endothermic reaction because the products hAve more heat than the reactions so it was a gain of heat which makes the enthalpy Change positive !
It is true because you can die of anything thus haveing an excess of ANYTHING can kill you and cause a family unhappiness
i looked it up watched a video and i saw that rusting occured hope this helped let me know if it did and rate me from ok good great or godly.
:)
