Advertisements
Advertisements
प्रश्न
Which of the following transition metals shows +1 and +2 oxidation states?
विकल्प
Mn
Zn
Sc
Cu
Advertisements
उत्तर
Cu
Explanation:
Cu typically exhibits the +1 oxidation state. This is due to the fact that Cu (+1) has an electrical configuration of [Ar]3d10. It is extremely stable due to the entirely filled d-orbital. Furthermore, Cu has a +2 oxidation state.
APPEARS IN
संबंधित प्रश्न
Which of the 3d series of the transition metals exhibits the largest number of oxidation states and why?
Which is a stronger reducing agent, Cr2+ or Fe2+ and why?
Describe the oxidising action of potassium dichromate and write the ionic equation for its reaction with iodide.
Highest oxidation state of manganese in fluoride is \[\ce{+4 (MnF4)}\] but highest oxidation state in oxides is \[\ce{+7 (Mn2O7)}\] because ______.
Why is \[\ce{HCl}\] not used to make the medium acidic in oxidation reactions of \[\ce{KMnO4}\] in acidic medium?
Why does copper not replace hydrogen from acids?
Explain why does colour of KMnO4 disappear when oxalic acid is added to its solution in acidic medium.
The electrode potential of M2+/M of 3d-series elements shows the positive value for ______.
Account for the following:
Sc3+ is colourless whereas Ti3+ is coloured in an aqueous solution.
In order to protect iron from corrosion, which one will you prefer as a sacrificial electrode, Ni or Zn? Why? (Given standard electrode potentials of Ni, Fe and Zn are -0.25 V, -0.44 V and -0.76 V respectively.)
