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Which of the following is the correct el...

Which of the following is the correct electronic configuration of potassium ?

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`1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(1)`
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AAKASH INSTITUTE ENGLISH-THE S-BLOCK ELEMENTS-Try Yourself
  1. Beryllium shows diagonal relationship with aluminium. Which of the fol...

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  2. Write the reason behind the digonal relationship among element.

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  3. Which of the following is the correct electronic configuration of pota...

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  4. Explain the trend in atomic radii on moving down a group, with referen...

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  5. Which one of the following alkali metals gives hydrated salts?

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  6. Why does the ionisation energy decrease on going down a group?

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  7. Among potassium and sodium which one is lighter metal?

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  8. What colour is imparted by Rubidium in flame test?

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  9. Which alkali metal do not show photoelectric effect?

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

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  11. What do metal oxides form when they react with water?

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  12. K, Rb and Cs form mainly superoxides.

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  13. Which compound is formed when lithium reacts directly with nitrogen in...

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  14. What is electrode potential?

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  15. If an element has more negative value of electrode potential, then wha...

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  16. Apart from water, alkali metals react with which kind of compounds?

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  17. Mention the important properties of saline hydrides

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  18. Except for lithium, alkali metals form their hydrides at what temperat...

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

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  20. Among the alkali metals, which element has the highest reducing power...

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