Hi i really need with this it's for balancing equations for science will mark

1.        Na₃PO₄ + 3 KOH → 3 NaOH + K₃PO₄

2.       Li₂CO₃ + MgF₂ → 2 LiF + MgCO3₃

3.      P4 + 3 O₂ → 2 P₂O₃

4.     2 RbNO₃ + BeF₂ —> Be(NO₃)₂ + 2 RbF

5.     2 AgNO₃ + Cu = Cu(NO₃)₂ + 2 Ag

6.     CF₄ + 2 Br₂ = CBr₄ + 2 F₂

7.     2 HCN + CuSO₄ → Cu(CN)₂ + H₂SO4₄

8.     GaF₃ + 3 Cs → 3 CsF + Ga

9.     BaS + PtF₂ → BaF₂ + PtS

10.    N₂ + 3 H₂ = 2 NH₃

11.     Br₂ + 2NaF =2 NaBr + F₂

12.     PB(OH)₂ + 2 HCl = 2 H₂O + PBCl₂

13.    2 AlBr₃ + 3 K₂SO₄ = 6 KBr + Al₂(SO₄)3₃

14.     CH₄ + 2 O₂ = CO₂ + 2 H₂O

15.     3 CaCl₂ + 2 Na₃PO₄ → Ca₃(PO₄)₂ + 6 NaCl  

16.     2K + Cl₂ = 2KCl

17.     2 AL + 2 HCl = 2 ALCl + H₂

18.      N₂ + 3 F₂ = 2 NF3₃

19.     SO₂ + 2Li₂Se → 2Li₂O + SSe₂

20.     2 NH₃ + H₂SO₄ → (NH₄)₂SO₄

it's all four options.

the awnser is group 12