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The group of noble gas elements is calle...

The group of noble gas elements is called zero group. Why ?

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With the exception of helium `(1s^(2))`, all other noble gas elements have `ns^(2)p^(6)` electronic configuration. Thus, they have highly symmetrical configuration and therefore, do not form compounds under ordinary conditions. In other words they show zero valency and are included in the zero group of the periodic table.
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DINESH PUBLICATION-THE P-BLOCK ELEMENTS -Concept Based Questions
  1. Reducing character decreases from SO(2) " to " TeO(2). Explain.

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  2. Why is iodine more soluble in KI solution than in water ?

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  3. Iodine is liberated in the reaction between KI and CU^(2+) ions but ch...

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  4. Lithium fluroide (LiF) is mainly ionic but lithium iodide (LiI) is cov...

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  5. Interhalogen compounds are more reactive than halogens. Why ?

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  6. ClF(3) exists but FCl(3) does not. Why ?

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  7. Ferric iodide is very unstable but ferric chloride is stable. Explain.

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  8. HF is not stored in glass bottles but is kept in wax bottles. Assign r...

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  9. KHF(2) is a well known compound whereas KHCl(2) does not exist. Why ?

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  10. Fluorine does not show variable oxidation states while other members o...

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  11. Chlorine water has both oxidising as well as bleaching properties prop...

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  12. On addition of ozone gas to KI solution, violet vapours are obtained. ...

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  13. Despite having greater polarity, hydrogen fluoride boils at a lower te...

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  14. The conjugate base of HClO(4) is a weaker base than H(2)O. Explain.

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  15. The group of noble gas elements is called zero group. Why ?

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  16. Noble gas elements form compounds only with fluorine and oxygen. Expla...

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  17. Helium and neon do not form compounds with fluorine. Assign reason.

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  18. Why is neon used in illuminating warning signal. Why ?

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  19. Xenon does not form fluorides such as XeF(3) and XeF(5). Explain.

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  20. Structure of xenon fluorides cannot be explained by valence bond theor...

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