Ответ:
a) 2Na+O2 = Na2O2
б) 2Na+Cl2 = 2NaCl
в) 2Al+3S=Al2S3
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Ответ:
a) 2Na+O2 = Na2O2
б) 2Na+Cl2 = 2NaCl
в) 2Al+3S=Al2S3