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The increasing order of the density of t...

The increasing order of the density of the alkali metal is

A

`Li lt K lt Na lt Rb lt Cs `

B

`Li lt Na lt K lt Rb lt Cs `

C

`Cs lt Rb lt Na lt K lt Li `

D

`Cs lt Rb lt K lt Na lt Li `

Text Solution

Verified by Experts

The correct Answer is:
A
Density gradually decreases on moving down a group . However, K is lighter than Na .
`Li lt K lt Na lt Rb lt Cs `
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MODERN PUBLICATION-S-BLOCK ELEMENTS ( ALKALI AND ALKALINE EARTH METALS ) -COMPETITION FILE ( MULTIPLE CHOICE QUESTION (B))
  1. Property of the alkaline earth metals that increases with their atomic...

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  2. Which one of the following alkaline earth metal sulphates has its hydr...

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

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

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  5. Which one is the correct observation when Br(2) is treated with NaF, N...

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  6. Which one of the following is present as an active ingredient in blea...

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  7. Which of the following compounds has the lowest melting point ?

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  8. Choose the incorrect statement in the following

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  9. Formula of plaster of Paris is

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

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  11. Which of the following is the weakest base?

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  12. Which one of the following is the strongest base ?

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  13. The element responsible for the neuromuscular function in the body is

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

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  15. The function of "Sodium pump" is a biological process operating in eac...

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  16. On heating which of the following release CO(2) most easily ?

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  17. Which of the following statement is false?

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  18. In context with beryllium, which one of the following statements is in...

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  19. Ionic mobility of which of the following alkali metal ions is lowest w...

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  20. Which of the following oxides is most acidic in nature ?

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