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For alkali metals, which of the followin...

For alkali metals, which of the following trends is incorrect?

A

Hydration energy : `Li gt Na gt K gt Rb`

B

Ionization energy : `Li gt Na gt K gt Rb`

C

Density : `Li lt Na lt K lt Rb`

D

Atomic size : `Li lt Na lt K lt Rb `

Text Solution

Verified by Experts

The correct Answer is:
B
The density of K is lower than that of Na . Therefore , trend (c) is incorrect .
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PRADEEP-S-BLOCK ELEMENTS (ALKALI AND ALKALINE EARTH METALS) -Competition Focus JEE (Main and Advance)/Medical Entrance (Multiple Choice Questions (With One Correct Answer))
  1. The ease of adsorption of the hydrated alkali metal ions on ion-exchan...

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  2. The increasing order of the density of the alkali metal is

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  3. For alkali metals, which of the following trends is incorrect?

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  4. The salt of alkali metal gives violet colour in the flame test. Its aq...

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  5. The salt of an alkali metal gives yellow colour in the flame test. Als...

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  6. The reaction between sodium and water can be made less vigorous by

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  7. Alkali metals have negative reduction potential and hence they behave ...

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  8. The correct order of reducing character of alkali metals is

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  9. Which one of the alkali metals forms only the normal oxide, M(2)O, on ...

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  10. The main oxides formed on combustion of Li,Na and K in excess of air r...

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  11. Sodium peroxide which is a yellow solid, when exposed to air becomes w...

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  12. Among the following compounds, the one that gets hydrolysed to form me...

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  13. KO(2) is used in oxygen cylinders in space and submarines because it

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  14. Which one of the following acts as a reducing as well as oxidising age...

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  15. The alkali metals form salt like hydrides by the direct synthesis at e...

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  16. Which of the following statements is false regarding alkali metals ?

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

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  18. In the case of alkali metals, the covalent character decreases in the ...

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  19. The correct order of increasing polarising power of the cations in the...

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  20. In the replacement reaction , The reaction will be most favourabl...

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