1) Mg+O₂₋>MgO2) P+Cl₂₋>PCl₃3) HgO₋>O₂+Hg4) AgBr₋>

Question

1) Mg+O₂₋>MgO
2) P+Cl₂₋>PCl₃
3) HgO₋>O₂+Hg
4) AgBr₋>

Answer 1

Mg+O2=>2MgO
2P+3Cl2=>2PCl3
2HgO=>O2+2Hg
AgBr=>Ag+Br