In which of the following transition metal ions (aquated) is the colour not correctly matched?
- A$Fe^{2+} - \text{Green}$
- B$Cu^{2+} - \text{Blue}$
- C$Fe^{3+} - \text{Pink}$
- D$V^{3+} - \text{Green}$
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The highest oxidation state of manganese in fluoride is $+4$ $(MnF_4)$,but the highest oxidation state in oxides is $+7$ $(Mn_2O_7)$ because __
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View SolutionWhich of the following pairs of oxides is amphoteric in nature?
Medium
View Solution$(a)$ Transition metals can act as catalysts because they can change their oxidation state. How does $Fe(III)$ catalyze the reaction between iodide and persulphate ions?
$(b)$ Mention any three processes where transition metals act as catalysts.
$(b)$ Mention any three processes where transition metals act as catalysts.
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View SolutionIdentify the basic oxide from the following:
Assertion : Transition metals are good catalysts.
Reason : $V_2O_5$ or $Pt$ is used in the preparation of $H_2SO_4$ by contact process.
Reason : $V_2O_5$ or $Pt$ is used in the preparation of $H_2SO_4$ by contact process.
MediumAIIMS 2015
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