Use electron transfer or electron shift to identify what is oxidized and what is reduced in each reaction :
a) 2na(s) + br2(l) > 2nabr(s)
b) h2(g) + cl2(g) > 2hcl(g)
c) 2li(s) + f2(g) > 2lif(s)
d) s(s) + cl2(g) > scl2(g)
e)n2(g) + 2o2(g) > 2no2(g)
f) mg(s) +cu(no3)2(aq) = mg(no3)2(aq) + cu(s)
for each reaction above, identify the reducing agent and the oxidizing agent