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प्रश्न
Name the oxometal anions of the first series of the transition metals in which the metal exhibits the oxidation state equal to its group number.
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उत्तर
In \[\ce{VO^{3-}_4}\] (Vanadate ion), Vanadium shows the +5 oxidation state, which is equal to its group number (5).
In \[\ce{Cr2O^{2-}_7}\] (Dichromate ion) and \[\ce{Cr^{2-}_4}\] (Chromate ion), chromium shows the +6 oxidation state, which is equal to its group number (6).
In \[\ce{MnO^-_4}\] (Permagnate ion), Manganese shows the +7 oxidation state, which is equal to its group number (7).
संबंधित प्रश्न
Complete the following equation : MnO4- + 8H+ + 5e- →
Describe the preparation of potassium dichromate from iron chromite ore. What is the effect of increasing pH on a solution of potassium dichromate?
Write the formula of an oxo-anion of Manganese (Mn) in which it shows the oxidation state equal to its group number.
Name a member of the lanthanoid series that is well-known to exhibit +2 oxidation state.
Zinc carbonate is precipitated from zinc sulphate solution by the addition of ___________.
On addition of small amount of \[\ce{KMnO4}\] to concentrated \[\ce{H2SO4}\], a green oily compound is obtained which is highly explosive in nature. Identify the compound from the following.
Which of the following reactions are disproportionation reactions?
(a) \[\ce{Cu^{+} -> Cu^{2+} + Cu}\]
(b) \[\ce{3MnO^{-}4 + 4H^{+} -> 2MnO^{-}4 + MnO2 + 2H2O}\]
(c) \[\ce{2KMnO4 -> K2MnO4 + MnO2 + O2}\]
(d) \[\ce{2MnO^{-}4 + 3Mn^{2+} + 2H2O -> 5MnO2 + 4H^{+}}\]
When \[\ce{Cu^2+}\] ion is treated with \[\ce{KI}\], a white precipitate is formed. Explain the reaction with the help of chemical equation.
What is the effect of pH on dichromate ion solution?
The oxidation state of manganese in the product obtained in a reaction of potassium permanganate and hydrogen peroxide in a basic medium is ______.
Complete the following ionic equation:
\[\ce{Cr2O^{2-}7 + 2OH^- ->}\]
Which of the following ions will have a magnetic moment value of 1.73 BM.
\[\ce{Sc^3+, Ti^3+, Ti^2+, Cu^2+, Zn^2+}\]
Indicate the steps in the preparation of \[\ce{K2Cr2O2}\] from chromite ore.
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chomite ore.
Indicate the step in the preparation of 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.
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chromite ore.
