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Why are the alkali metal ions colourless...

Why are the alkali metal ions colourless and diamagnetic ?

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The alkali metals

The alkali metals

Which ion is colourless:

Alkali metals act as

Alkali metals show-

Which of the following ion is colourless?

Why are alkali metals not found in nature?

Why are alkali metals not kept under water?

The alkali metals are soft due to-

The alkali metals are soft due to-

ICSE-THE s - BLOCK ELEMENTS-SHORT ANSWER TYPE QUESTIONS
  1. Why do alkali metals show characteristic colours in a non luminous fla...

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  2. Sodium readily formsNa^(+)ion but never forms Na^(2+) ion. Explain.

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  3. Why are the alkali metal ions colourless and diamagnetic ?

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  4. What is photoelectric effect? State t he result of photoelectric effec...

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  5. Why are potassium and caesium rather than lithium used in photoelectri...

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  6. Alkali metals are highly reactive elements. Explain, why?

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  7. What happens when alkali metals are exposed to air ?

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  8. Why are alkali metals not kept under water?

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  9. Why are lithium halides partially covalent ? Explain with examples.

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  10. Give a reason for each of the following: Alkali metals are good red...

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  11. Inspite of very high ionisation energy, lithium is the strongest reduc...

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  12. Why are the solutions of alkali metal atoms in liquid ammonia blue col...

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  13. Why does the basic strength of the hydroxides of alkali metals increas...

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  14. Name the chief factor responsible for the anomalous behaviour of lithi...

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  15. The elements of group 2 are called alkaline earth metals. Give reason.

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  16. The atomic radii of alkaline earth metals are smaller than those of th...

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  17. Why are the second ionisation energies of alkaline earth metals much s...

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  18. Among alkaline earth metals which element do you expect to be least el...

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  19. Why do alkaline earth metals have higher melting points than group 1 e...

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  20. Inspite of much higher second ionisation energy as compared to the fir...

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