Home
Class 11
CHEMISTRY
Assertion : A free radical is paramagnet...

Assertion : A free radical is paramagnetic species.
Reason : A free radical is formed in homolytic fission of covalent bond.

A

If both (A) and (R ) are correct and (R ) is the correct explanation of (A)

B

If both (A) and (R ) are correct, but (R ) is not the correct explanation of (A)

C

If (A) is correct, but (R ) is incorrect

D

If both (A) and (R ) are incorrect

Text Solution

Verified by Experts

The correct Answer is:
B

Free radicals have odd number of electrons in the valence shell and hence are paramagnetic.
Promotional Banner

Topper's Solved these Questions

  • ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES - PART II (ISOMERISM AND REACTION MECHANISM)

    BRILLIANT PUBLICATION|Exercise LEVEL-II|40 Videos
  • ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES - PART I (NOMENCLATURE)

    BRILLIANT PUBLICATION|Exercise LEVEL-III|45 Videos
  • ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES - PART III (PURIFICATION AND CHARACTERISATION OF ORGANIC COMPOUNDS)

    BRILLIANT PUBLICATION|Exercise LEVEL-II (ASSERTION-REASON TYPE)|15 Videos

Similar Questions

Explore conceptually related problems

Write the free radical mechanism for the polymerization of ethene

Reagents which attack organic compounds may be classified as electrophiles, nucleophiles and free radicals. Name the type of the fission of a covalent bond which gives free radicals.

Free radical polymerisation requires a free radical initiator. The most commonly used free radical initiator is:

What are free radicals? How are they formed?

Assertion : Superoxides of alkali metals are paramagnetic. Reason : Superoxides contain the ion O_2^- which has one unpaired electron.

Assertion : In vapour state sulphur is paramagnetic in nature. Reason : In vapour state sulphur exists as S_2 molecule.

BRILLIANT PUBLICATION-ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES - PART II (ISOMERISM AND REACTION MECHANISM) -LEVEL-II (ASSERTION-REASON TYPE)
  1. Assertion : Simple carbanions are usually pyramidal but allyl carbanio...

    Text Solution

    |

  2. Assertion : All the carbon atoms of but-2-ene lie in one plane. Reas...

    Text Solution

    |

  3. Assertion : A free radical is paramagnetic species. Reason : A free ...

    Text Solution

    |

  4. Assertion : Tertiary carbocations are generally formed more easily tha...

    Text Solution

    |

  5. Assertion : tert-Butyl carbanion is more stable than methyl carbanion....

    Text Solution

    |

  6. Assertion : The order of stability of carbocations are R(3)C^(+)gtR(2)...

    Text Solution

    |

  7. Assertion : 1^(@) allylic halides are more reactive than 1^(@) RX in S...

    Text Solution

    |

  8. Assertion : Crown ether acts as phase transfer catalysis and increases...

    Text Solution

    |

  9. Assertion : RS^(Theta) is a stronger nucleophile and a better leaving ...

    Text Solution

    |

  10. Assertion : E(1)cB reaction is favoured by stabilisation of carbanion ...

    Text Solution

    |

  11. Assertion : Inductive effect is responsible for the dipole moment in t...

    Text Solution

    |

  12. Assertion : A carbanion is pyramidal in shape like NH(3) and amines. ...

    Text Solution

    |

  13. Assertion : Hybridisation influences the bond length and bond enthalpy...

    Text Solution

    |

  14. Assertion : Rotation about C = C is restricted. Reason : Electron ch...

    Text Solution

    |

  15. Assertion : Heterolytic fission involves breaking of bond in such a wa...

    Text Solution

    |

  16. Assertion : The order of reactivity of carbocations is 3^(@)gt2^(@)1^(...

    Text Solution

    |

  17. Assertion : When inductive and electromeric effects operate in opposit...

    Text Solution

    |

  18. Assertion : 1^(@) allylic halides are more reactive than 1^(@) RX in S...

    Text Solution

    |

  19. Assertion : Rate of ethanolysis of 1^(@) halide by S(N)1 mechanism is...

    Text Solution

    |

  20. Assertion : Allyl and benzyl carbonium ions are more stable than propy...

    Text Solution

    |