Home
Class 12
CHEMISTRY
Two metals X and Y form covalent halides...

Two metals X and Y form covalent halides.Both halides can act as Lewis acids and a catalyst in Friedel Crafts reaction. Halide of X is polymer in the solid state and a dimer in the vapour state which decomposes to monomer at 1200 K. However, halide of Y is a dimer in vapour state and becomes ionic in polar solvent. X and Y are respectively

A

Be,AI

B

Al,Be

C

Be,Ca

D

Mg,Ca

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • MOCK TEST 5

    KVPY PREVIOUS YEAR|Exercise EXERCISE|23 Videos

  • MOCK TEST 7

    KVPY PREVIOUS YEAR|Exercise EXERCISE|26 Videos

Similar Questions

Explore conceptually related problems

Which halides of the element of group 13 do not exist as dimer in the vapour state, the element is

A reddish brown element 'X' can't displace a halogen from its silver halide 'Y'. This halide is insoluble in water. The X belongs to a group whose salts are found in sea water. X and Y respectively are

In solid state PCl_(5) exists as ionic solid i.e., [X]^(+)[Y]^(-) , shapes of X^(+) and Y^(-) are respectively

Carbon-oxygent bond in ethers can be cleaved b halogen acids, sulphuric acid, phosphorus pentachlodie, etc. The cleavage of C-O bond take place under drastic conditions with excess of hydrogen halides. R-O-R+2HX rarr 2RX +H_(2)O If hydrogen halide is not taken in excess then a molecule of alcohol and alkyl halide are formed. R-O-R+HI overset(373K) (rarr) R-OH+R-I The order of reactivity of hydrogen halides towards the given reaction depends on the bond strength of halogenated acids, weaker is the H-X bond, greter is its reactivity. In case of unsymmetrical ethers, the site of cleavage is such that the halide is formed from the alkyl group which is smaller in size. However, when one of the alkyl group is tertiary, the halide formed is the tertiary halide. Indiate wheterh the following statements // reactions are true or false. The order of hydrogen halide reactivity is, HI lt HBr lt HCl . (a) True (b) False

Carbon-oxygent bond in ethers can be cleaved b halogen acids, sulphuric acid, phosphorus pentachlodie, etc. The cleavage of C-O bond take place under drastic conditions with excess of hydrogen halides. R-O-R+2HX rarr 2RX +H_(2)O If hydrogen halide is not taken in excess then a molecule of alcohol and alkyl halide are formed. R-O-R+HI overset(373K) (rarr) R-OH+R-I The order of reactivity of hydrogen halides towards the given reaction depends on the bond strength of halogenated acids, weaker is the H-X bond, greter is its reactivity. In case of unsymmetrical ethers, the site of cleavage is such that the halide is formed from the alkyl group which is smaller in size. However, when one of the alkyl group is tertiary, the halide formed is the tertiary halide. Indiate wheterh the following statements // reactions are true or false. Alkyl aryl ethers react with HI to give phenol and alkyl halide. (a) True (b) False

Carbon-oxygent bond in ethers can be cleaved b halogen acids, sulphuric acid, phosphorus pentachlodie, etc. The cleavage of C-O bond take place under drastic conditions with excess of hydrogen halides. R-O-R+2HX rarr 2RX +H_(2)O If hydrogen halide is not taken in excess then a molecule of alcohol and alkyl halide are formed. R-O-R+HI overset(373K) (rarr) R-OH+R-I The order of reactivity of hydrogen halides towards the given reaction depends on the bond strength of halogenated acids, weaker is the H-X bond, greter is its reactivity. In case of unsymmetrical ethers, the site of cleavage is such that the halide is formed from the alkyl group which is smaller in size. However, when one of the alkyl group is tertiary, the halide formed is the tertiary halide. Indiate wheterh the following statements // reactions are true or false. In the reaction, R-O-R+HX rarr RX+ROH , oxonium [R-underset(H)underset(|)overset(+)(O)-R] ioin is formed as intermediate. (a) True (b) False

KVPY PREVIOUS YEAR-MOCK TEST 6-EXERCISE
  1. In the following reactions,

    Text Solution

    |

  2. Potassium has a bcc structure with nearest neighour distance 4.52 Åits...

    Text Solution

    |

  3. A 0.6gm sample consisting of only CaC(2)O(4) and MgC(2)O(4) is heated ...

    Text Solution

    |

  4. Formation of polyethylene from calcium carbide takes place as follows ...

    Text Solution

    |

  5. Which of the following, when mixed, will give a solution with pHgt7 ?

    Text Solution

    |

  6. Calculate the freezing point of a solution containing 8.1 g of HBr in ...

    Text Solution

    |

  7. Consider the following reactions: MX(4)+X'(2) to MX(4)X(2)' If ato...

    Text Solution

    |

  8. A compound 'X' on ozonolysis followed by reduction gives an aldehyde, ...

    Text Solution

    |

  9. The correct order of magnetic moments (spin values in B.M.) among is:

    Text Solution

    |

  10. The ammonia evolved from the treatment of 0.03 g of an organic compoun...

    Text Solution

    |

  11. In an electrolysis experiment, current was passed for 5h through two c...

    Text Solution

    |

  12. Based on the given diagram, which of the following statements regardin...

    Text Solution

    |

  13. The rate constant for the decomposition of a certain substance is 2.8...

    Text Solution

    |

  14. Which of the following combination will produce H(2) gas ?

    Text Solution

    |

  15. For the following molecules : PCl(5), BrF(3), IC l(2)^(-), XeF(5)^(-...

    Text Solution

    |

  16. Which of the following expression is correct for packing fraction of N...

    Text Solution

    |

  17. Two metals X and Y form covalent halides.Both halides can act as Lewis...

    Text Solution

    |

  18. Among [Ni(CO)(4)], [NiCl(4)]^(2-), [Co (NH(3))(4) Cl(2)] Cl, Na(3) [C...

    Text Solution

    |

  19. A mixture of CuSO(4).5H(2)O" and "MgSO(4). 7H(2)O was heated until all...

    Text Solution

    |

  20. For the reaction Ag(CN)(2)^(ɵ)hArr Ag^(o+)+2CN^(ɵ), the K(c ) at 25^...

    Text Solution

    |