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Why alkaline earth metals are harder tha...

Why alkaline earth metals are harder than alkali metals.

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(i) Atomic radius of alkaline earth metals are small and their densities are larger than those of alkali metals.
(ii) Alklaine earth metals have close packed crystal structure
(iii) Generally alkaline earth metals are soft yet less than that of alkali metals.
This is because the metallic bonding in alkaline earth metals are stronger than alkali metals.
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SURA PUBLICATION- ALKALI AND ALKALINE EARTH METALS-ADDITIONAL LONG ANSWER
  1. Why alkaline earth metals are harder than alkali metals.

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  2. List out the uses of alkali metals.

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  3. How are peroxides and superoxides formed by alkali metals?

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  4. Alkali metal hydrides are strong reducing agents. Prove this statement...

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  5. When does the blue coloured ammonia solution (of alkali metals) change...

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  6. Describe about the biological important of sodium and potassium.

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  7. How is sodium hydroxide prepared commercially from brine solution?

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  8. Why do Beryllium and nitrogen have zero electron affinity ?

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  9. Write the equation for the amphoteric nature of Beryllium hydroxide.

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  10. Explain the preparation and uses of the following compounds of calcium...

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  11. Describe solvay process (or) how is washing soda ( or) sodium carbonat...

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  12. Describe about the biological important of sodium and potassium.

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  13. Enlist the simularities between lithium and magnesium.

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  14. Compare the properties of beryllium with other elements of the same gr...

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  15. Give the important uses of the following compounds NaHCO3

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  16. Give the important uses of the following compounds NaOH

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  17. Enlist the simularities between lithium and magnesium.

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  18. Compare the properties of beryllium with other elements of the same gr...

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  19. Distinguish between alkali metals and alkaline earth metals.

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  20. When water is added to compound (A) of calcium, compound B is formed w...

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  21. An element occupies group number 1 and period number 3. This element w...

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