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Compared with the alkaline earth metals,...

Compared with the alkaline earth metals, the alkali metals exhibit

A

smaller ionic radii

B

Higher boiling points

C

Greater hardness

D

Lower ionisation enthalpies

Text Solution

Verified by Experts

The correct Answer is:
D
Alkali metal have lower ionisation enthalpies `(DeltaiH^(1))` because of bigger size and less symmetrical configuration.
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DINESH PUBLICATION-S-BLOCK ELEMENTS (ALKALI AND ALKALINE EARTH METALS )-MCQB
  1. Compared with the alkaline earth metals, the alkali metals exhibit

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  2. Which is maximum basic in the following ?

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  3. Micro-cosmic salt is :

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  4. Which of the following has the highest lattice energy ?

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  5. The affinity of sodium with water is used in

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  6. Which is maximum reactive towards water ?

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  7. Which has the maximum electropositive character ?

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  8. The electronic configuration of metal M is 1s^(2)2s^(2)2p^(6)3s^(1). T...

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  9. The stability of the following alkali metal chlorides follows the orde...

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  10. which has the maximum m.p ?

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  11. Which electronic configuration corresponds to least ionisation energy?

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  12. Which is formed with lithium is heated in air?

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  13. What types of ions are present in anhydrous mixture of KF and HF ?

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  14. Sodium gives blue colour in NH(3) solution. This blue colour is due to

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  15. When washing soda is heated.

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  16. Which sulphate has the highest solubility in water ?

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  17. Ba,Sr,Ca and Mg may be arranged in order of decreasing first ionisatio...

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  18. Which is the correct order of increasing basic strength?

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  19. Electronic configuration calcium atom can be written as

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  20. The most electropositive amongst the alkaline earth metals is:

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