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Gadolinium belongs to 4f series. Its ato...

Gadolinium belongs to 4f series. Its atomic number is 64. Which of the following is the correct electronic configuration of gadolinium?

A

`[Xe] 4f^7 5d^1 6s^2`

B

`[Xe] 4f^6 5d^2 6s^2`

C

`[Xe] 4f^8 6d^2`

D

`[Xe] 4f^9 5s^1`

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
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  2. Which of the following is amphoteric oxide? Mn2O7, CrO3, Cr2O3, CrO, V...

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  3. Gadolinium belongs to 4f series. Its atomic number is 64. Which of the...

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  4. Interstitial compounds are formed when small atoms are trapped inside ...

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  5. Find the magnetic moment of Cr^(2+)

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  6. WhenI^(-) is oxidised by MnO4^(-) in alkaline medium, I^(-) converts ...

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  7. Which of the following statements is not correct ?

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  8. When acidified K2Cr2O7 solution is added to Sn^(2+) salts than Sn^(2+...

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  9. Maximum oxidation number of manganese is in

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  10. Why do elements in the same group have similar physical and chemical p...

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  11. Write one oxidising reaction of KMnO4 in basic medium.

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  12. Which of the following compounds is not coloured?

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  13. Which of the following metallic ions have almost same spin only magnet...

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  14. Write the oxidation number of Co : [CoCl2 (en)2]^+

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  15. In which of the following compounds, iron has the lowest oxidation num...

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  16. General electronic configuration of actionoids is [Rn] 5f^(1-14) 6d^...

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  17. Give one example of Lanthanoid having +2 oxidation state.

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  18. Which of the following ions show higher spin only magnetic moment valu...

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  19. Element A has 3 electrons in the outermost shell and element B has 6 e...

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  20. Examples of food sources that contain calcium are-

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