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The hydrides of the elements in groups 1...

The hydrides of the elements in groups 15-17 namely `NH_3, H_2O` and HF respectively show abnormally high values for melting and boiling points. This is due to

A

small size of N, O and F

B

the ability to form extensive intermolecular H-bonding

C

the ability to form extensive intramolecular H- bonding

D

effective van der walls interaction

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The correct Answer is:
C
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PATHFINDER-CHEMICAL BONDING AND MOLECULAR STRUCTURE-QUESTION BANK
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  2. Which one of the following properties is not shown by NO ?

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  3. The hydrides of the elements in groups 15-17 namely NH3, H2O and HF re...

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  4. In case of heteronuclear diatomics of the type AB, where A is more ele...

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  5. The bond angle in NF3 (102.3^@) is smaller than NH3 (107.2^@). This is...

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  6. The structure of XeF6 is experimentally determined to be distorted oct...

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  7. Which one of the following species has plane triangular shape ?

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  8. The compound that will have a permanent dipole moment among the follow...

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  9. The correct order of decreasing length of the bond as indicated by the...

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  10. The pair of compounds having identical shapes for their molecules is

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  11. The correct arrangement of the species in the decreasing order of the ...

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  12. Which of the following is the correct order for strength of C-X bond ?

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  13. What is the geometry of molecule of bromine penta fluoride ?

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  14. Bond order of which among the following molecules is zero ?

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  15. The bond order in the superoxide ion (O2^-) is

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  16. The ion which is not tetrahedral in shape is

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  17. Dipole-induced dipole interactions are present in which of the followi...

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  18. Which one of the following molecules contain no pi-bond ?

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  19. Which one of the following is paramagnetic?

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  20. Geometry of SF2Cl2 molecule is

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