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PCl5 is an important halide. In crystall...

`PCl_5` is an important halide. In crystalline state it exists in ionic form. On reaction with water it forms different compounds
Answer the following questions based on above passage:
In crystalline state `PCl_5` exists as

A

`[PCl_4]^+Cl^-`

B

`[PCl_4]^+[PCl_6]^-`

C

`[PCl_3]^(2+)+2Cl^-`

D

`[PCl_6]^+[PCl_4]^-`

Text Solution

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The correct Answer is:
B
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PCl_5 is an important halide. In crystalline state it exists in ionic form. On reaction with water it forms different compounds Answer the following questions based on above passage: In presnce of small amount of water, PCl_5 hydrolyses to form :

Quantum mechanical calcuations show that mathematical mixing of certain combinaaation of orbitals in a given atom forms hybrid orbitals. The spatial orientations of these new orbitals lead to more stable bonds and are consistent with the observed molecular shapes . The process of orbital mixing is called hybridization and the new atomic orbitals are called hybrid orbitals.- Conditions (i) The no. of hybrid orbitals equal the number of atomic orbitalsmixed. (ii)The type of hybrid orbitals obtained varies with the type of atomic orbitals mixed. Rules to determine hybrid orbitals. Method i:Count no .of atoms directiy attached to central atom + lone pairs+single electrons. Method II: Count sigma - bonds+co-ordinate bonds+ lone pair+single electrons. If the number comes one to be 2 implies sp 5 implies sp^3d/dsp^3 3 implies sp^2 6 implies sp^3d^2/d^2sp^3 4 implies sp^3/dsp^2 7 implies sp^3d^3 Answer the following questions based on above passage : Phosphorous pentachloride in gaseous state exists as a momomer. In solid state, it exists as PCl_5^+. PCl_6^- ions. The hybrid state of P atom in PCl_5 is sp^3d . The hybrid state of P atoms in PCl_4^+ and PCl_6^- will be respectively

PATHFINDER-CHEMICAL BONDING AND MOLECULAR STRUCTURE-QUESTION BANK
  1. In which of the following the bond order is 3?

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  2. Which of the following species have similar bond order?

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  3. PCl5 is an important halide. In crystalline state it exists in ionic f...

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  4. PCl5 is an important halide. In crystalline state it exists in ionic f...

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  5. Bond order is associated with strength of bond and bond length. Higher...

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  6. Bond order is associated with strength of bond and bond length. Higher...

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  7. Which of the following is not correctly matched ?

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  8. Which is not correctly matched ?

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  9. Match Column-I (Molecular/ion) with Column-II (Bond order) and select ...

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  10. Which of the following is not correctly matched ? Bond angle(F-Xe-F)

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  11. Match Column-I (ions) with Column-II (shapes) and select the correct a...

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  12. Maximum number of replacable hydrogen atom in B2H6.

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  13. The number of pi bonds in crotonaldehyde is

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  14. The number of lone pair of electrons present on Xe in XeF4 is

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  15. The maximum possible number of hydrogen bonds in which a water (H2O) m...

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  16. How many type(s) of bonds is/are present in PCl5

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  17. Explain unusual stability of chloral hydrate though hydrates of aldehy...

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  18. BCl3 is planar while NH3 is pyramidal. Explain.

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  19. In XeF2, Xe is sp^3d hybridized but the shape is linear. Explain

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  20. Arrange the following in the order of increasing dipole moment : H2O,...

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