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Give the significance of Lewis symbols....

Give the significance of Lewis symbols.

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Significance of Lewis symbols are as below:
(i) Lewis symobols represent the number of valence present in an atom.
(ii) The number of valence electrons helps to calculate the common or group valence of the element. The group valence of element is either equal to number of dots in Lewis symbols `(" if "le 4)` or minus the number of dots `(" if "gt 4)`.
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OMEGA PUBLICATION-CHEMICAL BONDING AND MOLECULAR STRUCTURE -MULTIPLE CHOICE QUESTIONS
  1. Give the significance of Lewis symbols.

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  2. A crystal has highest meltiing point. It is

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  3. Which one of the following has the shortest carbon carbon bond length?

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  4. The percentage of s- character in the hybrid orbitals sp, sp^(2)" and ...

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  5. In the co-ordinate valency

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  6. Which of the following has a net dipole moment?

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  7. Which of the following is diamagnetic?

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  8. In which one of the following sp^2 hybridisation?

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  9. The shape of sulphate ion is

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  10. The bond order for a species with the configuration, sigma1s^(2), sigm...

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  11. Which of the following is paramagnetic?

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  12. Compare the relative stability of the following species and indicate t...

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  13. Which one shows maximum hydrogen bonding?

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  14. The weakest amoung the following types of bonds is

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  15. According to Fajan's rules covalent bonding is favourable by

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  16. The number of pi bonds in structure given are (NC)(2) C=C(CN)2

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  17. Which of the following compound is covalent?

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  18. Antibonding MO is formed by

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  19. In a hononuclear molecules, which of the following set of orbitals is...

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  20. Covalent compounds are soluble in

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  21. Which of the following has the largest de Broglie wavelength (all have...

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