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प्रश्न
Write observed electronic configuration of elements from first transition series having half
filled d-orbitals.
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उत्तर
| Elements | Symbols | Atomic Number |
Expected Electronic Configuration |
Observed Electronic Configuration |
| Chromium | Cr | 24 | [Ar] 3d4 4s2 | [Ar] 3d5 4s1 |
| Manganese | Mn | 25 | [Ar] 3d5 4s2 | [Ar] 3d5 4s2 |
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संबंधित प्रश्न
What is the molecular formula of chromyl chloride?
(A) CrO2Cl2
(B) CrOCl2
(C) CrCl3
(D) Cr2OCl2
What is the action of acidified potassium dichromate on - SO2
Draw the structure of the chromate ion.
What is the action of acidified potassium dichromate on - KI
In acid medium, potassium permanganate oxidizes oxalic acid to ____________.
Which of the following statements is not true?
How many moles of I2 are liberated when 1 mole of potassium dichromate react with potassium iodide?
The number of moles of acidified KMnO4 required to oxidize 1 mole of ferrous oxalate (FeC2O4) is ____________.
Describe the preparation of potassium dichromate.
Complete the following.
\[\ce{C6H5CH3 ->[acidified][KMnO4]?}\]
Complete the following.
\[\ce{MnO^-_4 + Fe^2+ ->?}\]
Complete the following.
\[\ce{KMnO4 ->[\Delta][Red hot]?}\]
Complete the following.
\[\ce{Cr2O^2-_7 + I^- + H^+ ->?}\]
Complete the following.
\[\ce{Na2Cr2O7 + KCl ->?}\]
Explain why Cr2+ is strongly reducing while Mn3+ is strongly oxidizing.
Why do the d-block elements form coloured compounds?
