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The stability of the following alkali me...

The stability of the following alkali metal chlorides follows the order:

A

`LiCI gt KCI gt NaCI gt CsCI`

B

`CsCI gt KCI gt NaCI gt LiCI`

C

`NaCl gt KCI gt LiCI gt CsCI`

D

`KCI gt CsCI gt NaCI gt LiCI`

Text Solution

Verified by Experts

The correct Answer is:
D
The stability of compound is linked with enthalpy of formation. Smaller the value, (greater the negative value) more will be the stability. Based on the values, LiCI is least stable while KCI is maximum stable
`Delta_(f) H` for LiCI = - 408.8 kJ `mol^(-1)`
`Delta_(f) H` for NaCI = - 412.5 kJ `mol^(-1)`
`Delta_(f) H` for CsCI =- 433.0 kJ `mol^(-1)`
`Delta_(f) H` for KCI = - 436.0 kJ `mol^(-1)`
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DINESH PUBLICATION-S-BLOCK ELEMENTS (ALKALI AND ALKALINE EARTH METALS )-MCQB
  1. Which has the maximum electropositive character ?

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

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

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  4. which has the maximum m.p ?

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  5. Which electronic configuration corresponds to least ionisation energy?

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

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

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

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  9. When washing soda is heated.

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  10. Which sulphate has the highest solubility in water ?

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

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

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  13. Electronic configuration calcium atom can be written as

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

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  15. Which imparts brick red colour to the flame ?

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  16. All the following substances react with water. The pair that gives the...

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  17. Which of the following metal ions plays an important role in muscle co...

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  18. The correct order of increasing thermal stability of K(2)CO(3),MgCO(3)...

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  19. The strongest base in the following is :

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  20. The hydroxide which is max, soluble in water is ?

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