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Nitrogen does not form pentahalides, whi...

Nitrogen does not form pentahalides, while other group members form. Describe the reaction based on hybridization of the central atom.

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Nitrogen does not form pentahalides due to the absence of d qrpitals in nitrogen:In.pentahalides of .group 15 elements, the central atom is in sp.d hybridization anid has trigonal bipyramidal structure. The important pentahalides of this group-are .PCl_5^* PF_s^+ SbF_1. etc.
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All aliphatic amines are more basic than ammonia but due to delocalization of lone pair of electrons of the nitrogen atom on the benzene ring, aniline is a weaker base than ammonia. The basic strength of the substituted anilines, however, depends upon the nature of the substituent. Whereas electron-donating groups tend to increase, electron-withdrawing groups tend to decrease the basic strength. The base strengthening effect of the electron-donating groups and base weakening effect of the electron-withdrawing groups is, however ,more pronounced at p-than at m-position. However, due to ortho effect, o-substituted anilines are weaker bases than anilines regardless of the nature of substituent whether electron-donating or electron-withdrawing. Among the following, the weakest base is

All aliphatic amines are more basic than ammonia but due to delocalization of lone pair of electrons of the nitrogen atom on the benzene ring, aniline is a weaker base than ammonia. The basic strength of the substituted anilines, however, depends upon the nature of the substituent. Whereas electron-donating groups tend to increase, electron-withdrawing groups tend to decrease the basic strength. The base strengthening effect of the electron-donating groups and base weakening effect of the electron-withdrawing groups is, however ,more pronounced at p-than at m-position. However, due to ortho effect, o-substituted anilines are weaker bases than anilines regardless of the nature of substituent whether electron-donating or electron-withdrawing. What is the order of basicity of I. p-methylaniline II. m-methylaniline III, aniline IV. o-methylaniline

All aliphatic amines are more basic than ammonia but due to delocalization of lone pair of electrons of the nitrogen atom on the benzene ring, aniline is a weaker base than ammonia. The basic strength of the substituted anilines, however, depends upon the nature of the substituent. Whereas electron-donating groups tend to increase, electron-withdrawing groups tend to decrease the basic strength. The base strengthening effect of the electron-donating groups and base weakening effect of the electron-withdrawing groups is, however ,more pronounced at p-than at m-position. However, due to ortho effect, o-substituted anilines are weaker bases than anilines regardless of the nature of substituent whether electron-donating or electron-withdrawing. Arrange the following amines in decreasing order of their basic strength

When 3-methylbutan-2-ol is treated with HBr,the, following reaction takes place: Give a mechanism for this reaction. (Hint: The secondary carbocation formed in step If, the arranges to a more stable- tertiary carbocation by a hydride ion shift from 3rd carbon atom.)

V PUBLICATION-The p-BLOCK ELEMENTS-QUESTION BANK
  1. List the uses of neon and argon gases.

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  2. Except CO2 all other dioxides of group 14 exist as solid at room tempe...

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  3. Nitrogen does not form pentahalides, while other group members form. D...

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  4. Complete the following table: '(##VPSHSSCHE XIIC07E03003Q01##)'

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  5. Two allotropic forms of sulphur have same structure. i. Identify th...

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  6. Sulphur forms two chlorides, SCl2 and S2Cl2 Write a note on their prep...

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  7. The acidic strength of oxoacids of chlorine is in the order 'HClO4,HCl...

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  8. "Inter halogén compounds are. more reactive than the constituent halog...

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  9. In a role play, student A is named as Boron and student B is naméd as ...

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  10. Carbon and Silicon are present in the same group. Their dioxides CO2 a...

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  11. Phosphorus is an essential constituent of both the plants and animals....

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  12. Account for the' "play of-colours' shown by. sodium thiosulphate with-...

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  13. a, What are inter-halogen compounds? Give any two example. b. The numb...

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  14. PCl , is known but 'NCl5' is unknown. Why?

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  15. N2 is inert. Why?

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  16. Urea is used as a fertilizer. Why?

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  17. What is the reaction between ammonium and chloroplatinic acid?

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  18. Which property is made use of in separating red phosphorus from white ...

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  19. Which is more stable PCl3 or PCl5 Why?

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  20. Group 16 elements are called chalcogens? Why?

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