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Most common oxidation state of actinoids...

Most common oxidation state of actinoids is ......... .

A

`+2`

B

`+3`

C

`+4`

D

`+5`

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The correct Answer is:
B
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The most common oxidation state of lanthanoids is

(i) What is the most common oxidation state of the actinoids? (ii) Why is Cu_2I_2 colourless ? Calculate the magnetic moment (spin only) value of the trivalent ion of element with atomic number 22.

Lanthanoids and actinoids are f-block elements in which the last electron enters the anti-penultimate energy level. The most common oxidation state of lanthanoids is +3, though +2 and +4 oxidation states are exhibited by some of the elements. In lanthanoid series, there is a progressive decrease in atomic and ionic radii, known as lanthanoid contraction. Unlike lanthanoids, actinoids show a large number of oxidation states. Which is the last element of the actinoid series? Write its electronic configuration.

Lanthanoids and actinoids are f-block elements in which the last electron enters the anti-penultimate energy level. The most common oxidation state of lanthanoids is +3, though +2 and +4 oxidation states are exhibited by some of the elements. In lanthanoid series, there is a progressive decrease in atomic and ionic radii, known as lanthanoid contraction. Unlike lanthanoids, actinoids show a large number of oxidation states. Name two lanthanoids which exhibit +2 oxidation state.

Lanthanoids and actinoids are f-block elements in which the last electron enters the anti-penultimate energy level. The most common oxidation state of lanthanoids is +3, though +2 and +4 oxidation states are exhibited by some of the elements. In lanthanoid series, there is a progressive decrease in atomic and ionic radii, known as lanthanoid contraction. Unlike lanthanoids, actinoids show a large number of oxidation states. Name an element of lanthanoid series, which is known to show +4 oxidation state. Is it a strong oxidising agent or reducing agent?

Lanthanoids and actinoids are f-block elements in which the last electron enters the anti-penultimate energy level. The most common oxidation state of lanthanoids is +3, though +2 and +4 oxidation states are exhibited by some of the elements. In lanthanoid series, there is a progressive decrease in atomic and ionic radii, known as lanthanoid contraction. Unlike lanthanoids, actinoids show a large number of oxidation states. Which out of La(OH)_3 and Lu(OH)_3 is more basic?

Lanthanoids and actinoids are f-block elements in which the last electron enters the anti-penultimate energy level. The most common oxidation state of lanthanoids is +3, though +2 and +4 oxidation states are exhibited by some of the elements. In lanthanoid series, there is a progressive decrease in atomic and ionic radii, known as lanthanoid contraction. Unlike lanthanoids, actinoids show a large number of oxidation states. Write the general electronic configuration of lanthanoids.

TARGET PUBLICATION-D AND F-BLOCK ELEMENT -CRITICAL THINKING
  1. Acidified potassium dichromate is treated with hydrogen sulphide. In t...

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  2. The bonds present in the structure of dichromate ion are

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  3. The equivalent mass of KMnO4in the following reaction is . (M = Mole...

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  4. In acidic medium one mole of MnO(4)^(-) accepts how many moles of elec...

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  5. Which orbital is progressively filled in lanthanides?

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  6. In which of the lanthanide elements, 5d electrons does NOT shift to 4f...

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  7. Configuration of La^(+3) will be same as .

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  8. Which of the following has the same observed and expected electronic c...

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  9. The most stable state of Ce (Z = 58) is

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  10. Among the following lanthanoid ions, the paramagnetic ion is

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  11. La^(+3) and Lu^(+3) have their ionic radii 'a' and 'b' respectively, t...

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  12. Across the lanthanide series, the basicity of the lanthanoid hydroxide...

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  13. The pair , that referred as 'chemical twins' is

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  14. In the periodic table actinons belong to

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  15. Identify the INCORRECT statement.

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  16. Most common oxidation state of actinoids is ......... .

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  17. Which of the following is FALSE regarding actinoids?

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  18. The element has configuration of [Kr]4d^7 5s^2. The number of electron...

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  19. Which of the following statement is INCORRECT?

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  20. Which of the following statements is INCORRECT?

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