Which of the chemical equations below is NOT correctly balanced
A 2Al + 6HCL -> 2AlCl3 + 3H2
B 2Na + 2H2O -> 2NaOH + H2
C Fe3O2 + 2H2 -> 3Fe + 2H2O
D 2Pb(NO3)2 -> 2PbO + 2NO2 + O2
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