________, and hence volume, is inversely proportional to density.
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Iron
________ appears to have unique oxidation states in magnetite (Fe3O4) and pyrite (FeS2), but it does not.
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Gold
________ has a density that is around 20 times that of water and twice that of lead.
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fast reactivity
In contrast to Group 1A (1) and 2A (2) metals '________ with water at ambient temperature, most transition metals have an oxide layer.
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Transition elements
________ with lower oxidation states act chemically more like metals, as do metals in Groups 3A (13), 4A (14), and 5A (15)
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aqueous acid
Except for copper, all Period 4 transition metals are active enough to convert H+ from ________ to produce hydrogen gas.
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metal ions
One- third of the ________ in magnetite are Fe2+ and two- thirds are Fe3+, resulting in a FeO /Fe2O3 ratio of 1 /1 and a formula of Fe3O4.
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higher energy orbitals
Electrons in a partly loaded capacitor, on the other hand, D sublevels can absorb visible wavelengths and transition to slightly ________.
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metal atom
A(n) ________ in a positive oxidation state attracts more bound electrons, resulting in higher electronegativity than a(n) ________ in a zero oxidation state.
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ionic bonding
That is, ________ is more common in lower oxidation levels, while covalent bonding is more common in higher oxidation states.
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+2
Iron* and cobalt are most commonly found in the ________ and +3 states, respectively, whereas nickel, copper, and zinc are most commonly found in the ________ state.
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metal ion
Because the ________ has a filled outer level (noble gas electron configuration, ns2 or ns2), most main- group ionic compounds are colored.
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