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प्रश्न
Which of the following ions has the electronic configuration 3d6?
(Atomic number: Mn = 25, Co = 27, Ni = 28)
विकल्प
Ni3+
Co3+
Mn2+
Mn3+
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उत्तर
Co3+
Explanation:
Electronic configuration of Ni3+ = [Ar] 3d7, Co3+ = [Ar] 3d6, Mn3+ = [Ar] 3d4 and Mn2+ = [Ar] 3d5
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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 metal in the first series of transition metals exhibits +1 oxidation state most frequently and why?
NF3 is possible, but NF5 is not. Why?
Answer the following question:
Which element of the first transition series has highest third ionisation enthalpy?
Mention the type of compounds formed when small atoms like H, C and N get trapped inside the crystal lattice of transition metals. Also give physical and chemical characteristics of these compounds.
Fill in the blanks by choosing the appropriate word(s) from those given in the brackets:
(activation energy, Threshold energy, increased, lowered, partially, full, d-d transition, Benzoic acid, benzaldehyde)
Only those transition metal ions will be coloured which have ______ filled d-orbitals facilitating ______.
Which of the following statements is not correct?
The basic character of transition metals monoxide follow the order.
Which of the following ions acts as a typical transition metal ion?
