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The most common and most stable oxidation state for all the elements of titanium family isA. `+2`B. `+3`C. `+4`D. `+1` |
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Answer» Correct Answer - C Group 4 consist of elements-titanium (Z = 22), zirconium (Z = 40), hafnium (Z = 72) and rutherfordium (Z = 104). They are lustrous silvery metals with high melting points. These elements arer relatively electropositive but less so than those of Group 3. If heated, they react directly with most non-metals, particularly with oxygen, hydrogen (reversibly) and in case of Ti, with nitrogen also. With the exception of hydrofluoric acid, minerals acid have little effect unless hot. This unreactivity results from a thin impermeble oxide film which form which forms on the surface and prevents further attack. The best solvent for all metals is HF, because they form hexafluoro complexes. `Ti + 6HF rarr H_(2) [TiF_(6)] + 2H_(2)` The most stable oxidation state is `+4`. The lower oxidation states are not known for heaver elements. Even for Ti, they are easily oxidized to `+4` state. |
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