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For alkali metals, which one of the foll...

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

A

Hydration energy : LigtNagtKgtRb

B

Ionization energy: LigtNagtKgtRb

C

Density:LiltNaltKltRb

D

Atomic size : LiltNaltKltRb

Text Solution

Verified by Experts

The correct Answer is:
C
Density gradually increases on moving down from Li to Cs. Potassium is , however, lighter than Sodium. The abnormal value of potassium is due to unusual increases in atomic size, i.e., atomic volume.
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ERRORLESS -S AND P BLOCK ELEMENTS-Ordinary thinking (Alkali metals)
  1. In the graph below, the one which present an alkali metal with the hig...

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  2. The alkali metal halide that is soluble in pyridine is

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

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  4. Choose the incorrect statement in the following

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  5. Which of the following alkali metals has the biggest tendency of the h...

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  6. Pyrolusite is

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  7. An inorganic compound first metls then resolidifies and then liberates...

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  8. Which of the following does not participate in the solvay's process f...

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  9. Sodium metal is extracted by

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  10. Which physical property in the alkali metal group increases with atomi...

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  11. Sodium carbonate reacts with SO(2) in aqueous medium to give

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  12. When CO is passed over solid NaOH heated to 200^(@)C , it forms

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  13. As compared to potassium ,sodium has .

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  14. Na(2)CO(3) can be manufactured by Solva's process but K(2)CO(3) cannot...

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  15. Which of the following is the smallest cation?

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  16. In the manufacture of metallic sodium by the fused salt electrolysis (...

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  17. The reactivity of the alkali metal sodium with water, is made use of

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  18. With the increase in atomic weights,melting points of the alkali metal...

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  19. Alkali metals are

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  20. Certain characteristics lithium differ from those of other alkali meta...

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