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In which block element lanthanoid Contra...

In which block element lanthanoid Contraction observe?

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Reason of lanthanoid contraction is-

What do you mean by lanthanoid Contraction?

Classify the following as d-block elements, lanthanoids and actinoids : Nb, Tc, Re, Nd, Pa, Tb, Cf

Actinoid contraction is greater from element to element than lanthanoid contraction. Why ?

Which element of lanthanoid shows +4 oxidation state?

Which is not s-block element ?

The extent of actinoid contraction is more than lanthanoid contraction. Give reason.

Which block element in the perodic table contains natural radioactive element?

UNITED BOOK HOUSE-MODEL QUESTION PAPER 18-EXERCISE
  1. Hallons damages —

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  2. Equivalent weight of an element having atomic weight 30 and valency 3 ...

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  3. In which block element lanthanoid Contraction observe?

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  4. Name the element having highest electron affinity.

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  5. Which type of propcsty internal energy is ?

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  6. Which one is the correct unit of entropy?

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  7. Write the equation for the determination of Nitrogen in Lassign test.

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  8. If the atomic weight of the Metal M be m in M2O3 find its equivalent ...

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  9. Illustrate with example law of multiple proportion.

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  10. Give the difference between orbit and orbital.

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  11. Calculate the frequency of the light emitted when an electron Jumps fo...

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  12. How would you synthesise Borax form coletnanite.

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  13. Compare the acidic nature of the oxides of Group 13 elements.

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  14. Which one is less basic methylamine and aniline.

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  15. What is particulate matter give example.

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  16. If the wave length and energy of an electron be lambda and E then show...

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  17. Write one differences between-particle and wave.

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  18. Derive de Broglies wave particle dnality eqn. Which quantum number is ...

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  19. Arrange with proper expiation in ascending order of Basisity of the fo...

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  20. Find the position of the element having atomic number 21 in the period...

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