Question

write the balanced chemical equation for the reaction elemental pentatomic thulium atoms, Tm5 , and elemental pentatomic astatine atoms, At5 , to produce thulium astatide, Tm9At13

Answer 1

A must unusual problem. If I underwstand it right, I would do this.
(9/5)Tm5 + (13/5)At5 ==> Tm9At13
9Tm5 + 13At5 = Tm9At13