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Certain characteristics lithium differ f...

Certain characteristics lithium differ from those of other alkali metals, the main reason for this is

A

Small size of Li atom and `Li^(+)` ion

B

Extremely high electropositiviy of Li

C

Greater hardness of Li

D

Hydration of `Li^(+)` ion

Text Solution

Verified by Experts

The correct Answer is:
A
Small atomic and ionic size leads to high electronegativity and hydration energy.
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Both alkali metals and alkaline earth metals are s- block elements. They resemble each other in many respects but still there are certain dissimilarities in their properties due to different number of electrons in the valence shell, different atomic radii, ionisation enthalpy, electronegativity, etc. Like lithium, Be also differs from rest of the alkaline earth metals on account of its small atomic size and high electronetativity. Be^(2+) ion is very small and exerts a high polarising effect on any anion associated with it. Which of the bicarbonate does not exist in solid state?

Both alkali metals and alkaline earth metals are s- block elements. They resemble each other in many respects but still there are certain dissimilarities in their properties due to different number of electrons in the valence shell, different atomic radii, ionisation enthalpy, electronegativity, etc. Like lithium, Be also differs from rest of the alkaline earth metals on account of its small atomic size and high electronetativity. Be^(2+) ion is very small and exerts a high polarising effect on any anion associated with it. The correct sequence of increasing covalent character is

Both alkali metals and alkaline earth metals are s- block elements. They resemble each other in many respects but still there are certain dissimilarities in their properties due to different number of electrons in the valence shell, different atomic radii, ionisation enthalpy, electronegativity, etc. Like lithium, Be also differs from rest of the alkaline earth metals on account of its small atomic size and high electronetativity. Be^(2+) ion is very small and exerts a high polarising effect on any anion associated with it. Which is least thermally stable?

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The property of hydrogen which distinguish it from other alkali metal is

ERRORLESS -S AND P BLOCK ELEMENTS-Ordinary thinking (Alkali metals)
  1. With the increase in atomic weights,melting points of the alkali metal...

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  2. Alkali metals are

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

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  4. Characterstic feature of alkali metals is

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  5. The correct formula of hypo is

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  6. Which of the following gases turns the acdified potassium dischromate ...

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  7. Which of the following does not illustrate the anomalous properties of...

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  8. Which of the following has density greater than water?

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  9. The valence shell electronic configuration of alkali metals is

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  10. The strongest reducing agent is

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  11. One of the following salts will give an alkaline solution on dissolvin...

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  12. The most electropositive element in alkali metals is .

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  13. Composition of borax (Tincal) is

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  14. Which of the following is formed when CO(2) gas is passed through an a...

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  15. Sodium hydride (NaH) when dissolved in water, produces

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  16. Which one of the following salts gives aqueous solution which is weakl...

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  17. Sn is dissolved in excess of NaOH solution, the compound obtained is

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  18. The word 'alkali' is used for alkali metals indicates

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  19. Potassium nitrate is called

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  20. Which of the following is most reducing agent

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