Home
Class 11
CHEMISTRY
A molecule is stable when the number of ...

A molecule is stable when the number of bonding orbitals is ________.

A

greater than the number of antibonding orbitals

B

greater than or equal to the number of antibonding orbitals

C

equal to the number of antibonding orbitals

D

less than the number of antibonding orbitals

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • NATURE OF CHEMICAL BOND

    TARGET PUBLICATION|Exercise Competitive Thinking|62 Videos

  • HYDROGEN

    TARGET PUBLICATION|Exercise Evaluation test|14 Videos

  • REDOX REACTIONS

    TARGET PUBLICATION|Exercise EVALUATION TEST|15 Videos

Similar Questions

Explore conceptually related problems

The distribution of electrons among molecular orbitals is called the electronic configuration of the molecule which provides us the following very important informations about the molecule. (A)Stability of molecule : The molecule is stable if number of bonding moleculer orbital electrons (N_b) is greater than the number of antibonding molecular orbital electrons (N_a) . (B) Bond order : Bond order =1/2(N_b-N_a) A positive bond order means a stable molecule while a negative or zero bond order means an unstable molecule. ( C)Nature of the bond : Bond order 1,2 and 3 corresponds to single , double and triple bonds respectively. (D)Bond length: Bond length decreases as bond order increases. (E)Magnetic nature: Molecular orbitals in a molecule are doubly occupied , the substance is diamagnetic and if one or more molecular orbitals are singly occupied, it is paramagnetic. N_2 has greater dissociation energy than N_2^+ , where as O_2 has a lower dissociation energy than O_2^+ because

According to molecular orbital theory molecules are said to be stable if the number of electrons in bonding molecular orbitals is …………… the number of electrons in antibonding molecular orbitals.

If molecule MX_3 has zero dipole moment, the sigma bonding orbitals used by M (atomic number lt2l ) are

Total number of bonding molecular orbitals in O_(2) molecule is

Assertion: The bond order of helium molecule is always zero. Reason: The number of electrons in bonding molecular orbital and antibonding molecular orbital is equal.

Atomic orbitals of bonded atoms combine to form molecular orbitals. The number of molecular orbitals formed is equal to the number of atomic orbitals taking part in the bond formation. When two atomic orbitals combine, two molecular orbitals are formed one of which has lower energy than the combining orbitals and is called bonding Molecular Orbital (MO). Whereas the other having higher energy than the two combining atomic orbitals is called Anti Bonding Molecular orbitals (ABMO) The two combining atomic orbitals must have comparable energies and should be properly oriented to allow considerable overlapping. If the overlapping is end to end along internuclear axis, the molecular orbital is called sigma and if the overlapping is lateral 1.e., sidewise the molecular orbital is called pie. Just like atomic orbitals, the molecular orbitals also have varying energy levels. Filling of electrons in molecular orbitals takes place following the same rules as followed for filing of atomic orbitals. The order of filling may not be same for all the molecules or their ions. Bond order is a useful parameter for comparing the various characteristics of molecules. The bond order (BO) in B_2 molecule is

TARGET PUBLICATION-NATURE OF CHEMICAL BOND-Evaluation test
  1. In a homologous series, the percentage of 's' character .

    Text Solution

    |

  2. Which of the following molecule has two p-orbitals unused?

    Text Solution

    |

  3. Energy required to dissociate 4g of gaseous hydrogen into free gaseous...

    Text Solution

    |

  4. What happens when aluminium reacts with NaOH in presence of water mole...

    Text Solution

    |

  5. What is the geometrical shape of [Pt(Cl)(4)]^(2-)?

    Text Solution

    |

  6. Stability of the species Li(2), Li(2)^(-) and Li(2)^(+) increases in t...

    Text Solution

    |

  7. Which of the following is NOT used to represent bond angles ?

    Text Solution

    |

  8. The number of sigma bonds in CH(2)=CH - CH = CH - C -= CH is .

    Text Solution

    |

  9. The stability of ionic crystal depends principally on

    Text Solution

    |

  10. An example for an electron deficient molecule is .

    Text Solution

    |

  11. Octahedral molecular shape exists in hybridisation.

    Text Solution

    |

  12. The species having bond angles of 109^(@)28 is .

    Text Solution

    |

  13. The bond angle in ammonia is 107^(@)18 due to .

    Text Solution

    |

  14. A molecule is stable when the number of bonding orbitals is .

    Text Solution

    |

  15. Which of the following molecules CANNOT exist under normal conditions?

    Text Solution

    |

  16. The electronegativity values of C,H,O,N and S are 2.5, 2.1, 3.5, 3.0 a...

    Text Solution

    |

  17. Find the CORRECT set with respect to molecule, hybridisation and shape...

    Text Solution

    |

  18. If in a polar molecule, the ionic charge is 2.6 xx 10^(-10) e.s.u. and...

    Text Solution

    |

  19. Which of the following does NOT show hydrogen bonding?

    Text Solution

    |

  20. Which of the following theory provides good explanation about the para...

    Text Solution

    |