Which one of the following pairs of compounds illustrate the law of multiple proportions:
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Problem
Which one of the following pairs of compounds illustrate the law of multiple proportions:
H2O,Na2OMgO,Na2ONa2O,BaOSnCl2,SnCl4
(1) H2O,Na2O
(2) MgO,Na2O
(3) Na2O,BaO
(4) SnCl2,SnCl4