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General electronic configuration of actinoids is (n-2)f1-14(n-1)d0-2ns2.Which of the following actinoids have one electron in 6d orbital?

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प्रश्न

General electronic configuration of actinoids is `(n-2)f^(1-14)(n - 1)d^(0-2)ns^2`.Which of the following actinoids have one electron in 6d orbital?

(i) U (Atomic no. 92)

(ii) Np (Atomic no.93)

(iii) Pu (Atomic no. 94)

(iv) Am (Atomic no. 95)

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उत्तर

(i) U (Atomic no. 92)

(ii) Np (Atomic no.93)

Explanation:

Electronic configuration:

92U – 5f3 6d1 7s2

93Np – 5f4 6d1 7s2 

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पाठ 8: The d-and f-Block Elements - Multiple Choice Questions (Type - I) [पृष्ठ ११०]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
पाठ 8 The d-and f-Block Elements
Multiple Choice Questions (Type - I) | Q 26 | पृष्ठ ११०

संबंधित प्रश्‍न

What are chemical twins? Write ‘two’ examples.


What are lanthanoids?


Which among the following pairs of elements is 'not' an example of chemical twins?


Account for the following :

Zr and Hf have almost similar atomic radii.


Write the electronic configuration of the element with the atomic number 61.


Write the different oxidation states of iron


Explain, why lanthanum (Z = 57) forms La3+ ion, while cerium (Z = 58) forms Ce4+ ion?


Explain the cause of Lanthanoids contraction.


Name an element of lanthanoid series which is well knwon to shown +4 oxidation state. Is it a strong oxidising agent or reducing agent? 


What is the action of the following on lanthanoids?
a. water
b. Sulphur, heat
c. nitrogen, heat


Although +3 is the characteristic oxidation state for lanthanoids but cerium also shows +4 oxidation state because:

(i) it has variable ionisation enthalpy

(ii) it has a tendency to attain noble gas configuration

(iii) it has a tendency to attain f 0 configuration

(iv) it resembles Pb4+ 


On the basis of Lanthanoid contraction, explain the following:

Nature of bonding in \[\ce{La2O3}\] and \[\ce{Lu2O3}\] .


On the basis of Lanthanoid contraction, explain the following:

Trends in the stability of oxo salts of lanthanoids from \[\ce{La}\] to \[\ce{Lu}\].


On the basis of Lanthanoid contraction, explain the following:

Stability of the complexes of lanthanoids.


On the basis of Lanthanoid contraction, explain the following:

Radii of 4d and 5d block elements.


Which of the following pairs has the same ionic size?


Assertion: There is a continuous increase in size among Lanthanoids with an increase in atomic number.

Reason: Lanthanoids do not show Lanthanoid contraction.


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