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'Each alkali metal is the most electropo...

'Each alkali metal is the most electropositive element in its period'. Comment on the statement and explain.

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ICSE-THE s - BLOCK ELEMENTS-TRUE OR FALSE. TYPE QUESTIONS (State whether the following statements are True or False:
  1. The atomic and ionic radii of alkali metals are the smallest in their ...

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  2. The density of alkali metals increases from Li to Cs.

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  3. 'Each alkali metal is the most electropositive element in its period'....

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  4. The correct order of hydration enthalpies of alkali metal ions is:

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  5. Li is used in photoelectric cells.

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  6. K, Rb and Cs form mainly superoxides.

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

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

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  9. When an alkali metal dissolves in liquid ammonia the solution can acqu...

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  10. The densities of alkaline earth metals are much smaller than those of ...

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

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  12. Why do alkaline earth metals and their compounds impart characteristic...

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  13. The flame test with a salt P gave a brick red flame. What is the catio...

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  14. Be(OH)2 is

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  15. BaCl2 is a low melting volatile solid.

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  16. Assertion : Among alkaline earth metals, Be predominantly forms covale...

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  17. Why do lithium and sodium not occur in free state in nature ?

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  18. Lithium forms alloys with a number of metals. Why?

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  19. Sodium acts as a strong reducing agent. Why?

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  20. Hydrated magnesium chloride on heating gives magnesium oxide.

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