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प्रश्न
Give a reason for the following.
Some transition metals and their compounds get attracted towards the magnetic field.
उत्तर
Due to the presence of unpaired electrons in d-orbital, some transition metals and their compounds are attracted to the magnetic field.
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संबंधित प्रश्न
|
`E_((M^(2+)/M)` |
Cr | Mn | Fe | Co | Ni | Cu |
| -0.91 | -1.18 | -0.44 | -0.28 | -0.25 | -0.34 |
From the given data of E0 values, answer the following questions :
(1) Why is `E_(((Cu^(2+))/(Cu)))` value exceptionally positive
(2) Why is `E_(((Mn^(2+))/(Mn)))` value is highly negative as compared to other elements
(3) Which is the stronger reducing agents Cr2+ or Fe2+ ? Give Reason.
Why is the highest oxidation state of a metal exhibited in its oxide or fluoride only?
Which one of the following ions is coloured?
Transition metals with highest melting point is ____________.
Which of the following statements is not correct?
EΘ of Cu is + 0.34V while that of Zn is – 0.76V. Explain.
When an oxide of manganese (A) is fused with KOH in the presence of an oxidising agent and dissolved in water, it gives a dark green solution of compound (B). Compound (B) disproportionates in neutral or acidic solution to give purple compound (C). An alkaline solution of compound (C) oxidises potassium iodide solution to a compound (D) and compound (A) is also formed. Identify compounds A to D and also explain the reactions involved.
Why are fluorides of transition metals more stable in their higher oxidation state as compared to the lower oxidation state?
Consider the following standard electrode potentials (E° in volts) in aqueous solution:
| Element | M3+/M | M+/M |
| Al | - 1.66 | +0.55 |
| Tl | + 1.26 | -0.34 |
Based on these data, which of the following statements is correct?
Account for the following:
Copper has an exceptionally positive `"E"_("M"^(2+)//"M")^0` value.
