Answer:
The total charge of cations plus anions must equal zero.
Step-by-step explanation:
The result Barium sulfide which is arrived upon because the total charge of cation plus anions =0
+2+(-2)=0 as seen above. The product is an electrically neutral compound.
Ba²⁺+ S²⁻⇒BaS
The product is a solid which is in the looks of black ash.