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Name a chalcogen and an alkaline earth m...

Name a chalcogen and an alkaline earth metal.

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Oxygen (O) is an example of chalcogen and megnesium (Mg) is an alkaline earth metal.
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CHHAYA PUBLICATION-CLASSIFICATION OF ELEMENTS & PERIODICITY IN PROPERTIES-SOLVED WBCHSE SCANNER
  1. Among which of the following pairs of elements, the first one has less...

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  2. Name a pair of elements exhibit diagonal relationship.

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  3. Name a chalcogen and an alkaline earth metal.

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  4. Explain why the size of a cation is smaller than that of corresponding...

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  5. State how oxidising and reducing properties change along the group of ...

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  6. (i) Mention the names of most electropositive and most electronegative...

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  7. Which has greater ionisation energy and why-S or P?

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  8. Arrange as directed: (i) SiO(2),NO(2),Al(2)O(3),CiO(2) (Increasing aci...

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  9. Arrange the following ions in the increasing order of their ionic radi...

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  10. Arrange the following elements according to their decreasing oxidising...

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  11. Arrange as per introduction: (i) Na(2)O,B(2)O(3),Al(2)O(3),MgO (increa...

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  12. The first ionisation energy of the Be is greater than that of B but t...

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  13. (i) Two atoms X and Y have electronic configuration [He]2s^(2)2p^(3) a...

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  14. (i) Electron affinity of Cl is greater than that of E explain. (ii) ...

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  15. metallic property of element-down the group in periodic table.

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  16. Arrange the following in increasing order of ionic radius: Na^(+), F^(...

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  17. (i) Why does nitrogen have a higher ionisation enthalpy than that of o...

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  18. What will be the order of Na, Mg, Al and Si in terms of first ionisati...

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  19. Arrange the following ions in order of increasing ionic radii: Na^(+),...

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  20. (i) Why is theh electron-gain enthalpy of oxygen is less than that of ...

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