Active metals often form a protective oxide surface film that prevents further r

Question

Active metals often form a protective oxide surface film that prevents further reaction of the metal with i oxygen in the air Which one of the following formulas for the metal oxide is NO T correct. Al_2O_3 is aluminum oxide Mgo_2 is magnesium oxide. Fe_2O_3 is iron(lll) oxide FeO is iron(II) oxide. Na_2O is sodium oxide. Buffer solutions that maintain certain levels of pH or acidity are widely used in biochemical experiments. One common buffer system uses sodium dehydrogenase phosphate and sodium mono hydrogen phosphate What are the formulas of these two compounds? Na(HPo_4) and Na(HPO_4)_2 Na_2H_2PO_4, and NaHPO_4 NaH_2PO_4, and Na_2HPO_2 NaPO_4 and NaHPO_4

Explanation / Answer

Question 2:

Option d is incorrect.

As Mg can form Mg2+ ion , according to which it will form MgO as an oxide

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