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Why do beryllium and magnesium not impar...

Why do beryllium and magnesium not impart colour to the flame in the flame test?

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Both these elements have small atomic size and high ionisation enthalpies. The energy of the flame is not sufficient to cause the excitation of the electrons in the atoms of these elements. They therefore, donot impart any colour to the flame.
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DINESH PUBLICATION-S-BLOCK ELEMENTS (ALKALI AND ALKALINE EARTH METALS )-Short Answer Type Questions
  1. How do you account for the strong reducing power of lithium in aqueous...

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  2. When heated in air, the alkali metals form various oxides. Mention the...

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  3. Complete the following reactions

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  4. Lithium resembles magnesium in some of its properties. Mention two suc...

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  5. Name an element from group 2 which forms an amphoteric oxide and a wat...

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  6. Discuss the trend of the following (i) Thermal stability of carbonat...

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  7. Why are BeSO(4) and MgSO(4) readily soluble in water while CaSO(4),SrS...

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  8. All compounds of alkali metals are easily soluble in water but lithium...

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  9. In the Solvay process, can we obtain sodium carbonate directly by trea...

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  10. Why do beryllium and magnesium not impart colour to the flame in the f...

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  11. What is the structure of BeCI(2) molecule in gaseous and solid state?

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  12. The s-block elements are characterised by their larger atomic sizes, l...

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  13. Present a comparative account of the alkali and alkaline earth metals ...

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  14. When a metal of group 1 was dissolved in liquid ammonia, the following...

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  15. The stability of peroxide and superoxide of alkali metals increase as ...

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  16. When water is added to compound (A) of calcium, solution of compound (...

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  17. Lithium hydride can be used to prepare other useful hydrides. Berylliu...

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  18. An element of group 2 forms covalent oxide which is amphoteric in natu...

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  19. Ions of an element of group 1 participate in the transmission of nerve...

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