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Although geometries of NH(3) and H(2)O m...

Although geometries of `NH_(3) and H_(2)O` molecules are distorted tetrahedral, bond angle in water is less than that of ammonia. Discuss.

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`NH rarr NH_(3)`
`H_(2)O rarr H_(2)O:`
Because of two lone pair of electrons on O-atom, repulsion on bond pairs is greater in `H_(2)O` in comparison to `NH_(3)`. Thus, the bond angle is less in `H_(2)O` molecules.
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FULL MARKS-CHEMICAL BONDING -ADDITIONAL QUESTIONS SOLVED (2-MARK QUESTIONS)
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  2. Explain the bond formation of hydrogen molecule.

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  3. Identify the bond between H and F in HF molecule.

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  4. What is meant by colloid ?

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  5. Why metallic bonding is referred as electronic bonding?

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  6. Metals have density .

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  7. Metals are ductile in nature. Why?

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  8. The melting point of aluminium is .

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  9. The crystals which are good conductors of electricity and heat are

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  10. Metals have high thermal conductivity. Give reason.

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  11. Except Cu, Ag and Au, most metals are black. Why?

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  12. Write the favourable factors for the formation of ionic bond.

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  13. Although geometries of NH(3) and H(2)O molecules are distorted tetrah...

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  14. Write the significance/applications of dipole moment.

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  15. CO(2) and H(2)O both are triatomic molecules but their dipole moment ...

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  16. What is the total number of sigma and pi bonds in the following molecu...

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  17. Use molecular orbital theory to explain why the Be(2) molecule does no...

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

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  19. Account for the following: (i) water is a liquid while H(2)S is a ga...

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  20. Why B(2) is paramagnetic in nature while C(2) is not?

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