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प्रश्न
Give an example and suggest a reason for the following feature of the transition metal chemistry:
A transition metal exhibits the highest oxidation state in oxides and fluorides.
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उत्तर
The highest oxidation states of transition metals are observed in oxides and fluorides. Because oxygen and fluorine are highly electronegative elements and small in size, they are strong oxidising agents. For example, osmium displays a +6 oxidation state in OsF6, and vanadium displays a +5 oxidation state in V2O5.
संबंधित प्रश्न
Complete the following equations:
Complete the following equations: Cr2O72- + 14H+ + 6I →
Complete the following chemical equation
8MnO4- + 3S2O32- + H2O →
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Complete the following chemical equation
Cr2O72- + 3Sn2+ + 14H+ →
Describe the preparation of potassium dichromate from iron chromite ore. What is the effect of increasing pH on a solution of potassium dichromate?
Describe the preparation of potassium permanganate. How does the acidified permanganate solution react with iron (II) ions? Write the ionic equation for the reaction.
Indicate the steps in the preparation of K2Cr2O7 from chromite ore.
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Cu + H2SO4(conc.) →
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Manganese shows maximum number of oxidation states in 3d series.
E0 value for Mn3+ Mn2+ couple is much more positive than that for Cr3-/ Cr2-.
Using IUPAC norms, write the formula of potassium trioxalatochromate(III).
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Generally transition elements and their salts are coloured due to the presence of unpaired electrons in metal ions. Which of the following compounds are coloured?
(i) \[\ce{KMnO4}\]
(ii) \[\ce{Ce(SO4)2}\]
(iii) \[\ce{TiCl}\]
(iv) \[\ce{Cu2 Cl2}\]
The oxidation state of manganese in the product obtained in a reaction of potassium permanganate and hydrogen peroxide in a basic medium is ______.
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chromite ore.
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chromite ore.
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chromite ore.
