How to write a balance chemical equation for the reaction of molecular oxygen with radium metal to form oxide?
1 Answer
Mar 31, 2015
The balanced chemical equation is
2Ra + O₂ → 2RaO
A glance at the Periodic Table tells you that Ra is a Group 2 metal.
It should form Ra²⁺ ions.
O is a Group 16 nonmetal.
It forms O²⁻ ions.
So the formula of radium oxide should be RaO.
We predict the balanced equation to be
2Ra + O₂ → 2RaO
