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Transition metal oxides show marked differences in electrical properties.
o TiO, CrO2 and ReO3 behave like metals.
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Rhenium oxide, ReO3 resembles metallic copper in terms of its conductivity and appearance.
Certain other oxides like VO, VO2, VO3 and TiO3 exhibit metallic or insulating properties depending on temperature.
Magnetic Properties
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Every substance possesses magnetic properties originated from the electrons present in them.
o Each electron in an atom behaves like a tiny magnet.
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The magnetic moment of these substances originates from two types of motions
its orbital motion around the nucleus and o its spin around its own axis.
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o
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Electron being a charged particle undergoes these motions and can be considered as a small loop of current possessing a magnetic moment.
Therefore, each electron has a permanent spin and an orbital magnetic moment associated with it.
Magnitude of this magnetic moment is very small and is measured in the unit called Bohr magneton, μ B and is equal to 9.27 × 10 – 24A m 2.