Concept explainers
(a)
Interpretation:
The oxidation state of oxygen in each oxide and the oxidation state of the other element should be determined.
Concept introduction:
Oxygen has six valence electrons in its valence shell, therefore, oxygen can achieve an octet by accepting two electrons from an active metal or by sharing two additional electrons through covalent bonding.
When oxygen reacts with active metals, it gives ionic oxides. With nonmetals, oxygen forms covalent oxides.
All the oxygen in oxides are in
(b)
Interpretation:
Each oxide should be identified as ionic or covalent.
Concept introduction:
Oxygen has six valence electrons in its valence shell, therefore, oxygen can achieve an octet by accepting two electrons from an active metal or by sharing two additional electrons through covalent bonding.
When oxygen reacts with active metals, it gives ionic oxides. With nonmetals, oxygen forms covalent oxides.
(c)
Interpretation:
Each oxide should be identified as acidic or basic
Concept introduction:
Oxides can be categorized as basic, acidic or amphoteric. Basic oxides are ionic and are formed by metals on the left side of the periodic table. Acidic oxides are covalent and are formed by nonmetals on the right side of the periodic table.
(d)
Interpretation:
The identity of the other element in (1) and (2) should be determined.
Concept introduction:
Oxygen has six valence electrons in its valence shell, therefore, oxygen can achieve an octet by accepting two electrons from an active metal or by sharing two additional electrons through covalent bonding.
When oxygen reacts with active metals, it gives ionic oxides. With nonmetals, oxygen forms covalent oxides.
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CHEMISTRY-TEXT
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