Home
Class 11
CHEMISTRY
Generally, the first ionization energy i...

Generally, the first ionization energy increases along a period. But there are some exceptions. One which is NOT an exception is……………

A

N and O

B

Na and Mg

C

Mg and Al

D

Be and B

Text Solution

Verified by Experts

The correct Answer is:
B
From sodium to magnesium, ionization energy increases normally . It is not an exception.
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL BONDING AND MOLECULAR STRUCTURE

    DINESH PUBLICATION|Exercise COMPREHENSION|4 Videos

  • ENVIRONMENTAL CHEMISTRY

    DINESH PUBLICATION|Exercise Integer Type Questions|4 Videos

Similar Questions

Explore conceptually related problems

Generally, the first ionisation energy increases along a period. But there are some exceptions one which is not an exception is

The ionisation energy (IE_(1)) of an atom is defined as the energy needed to remove an electron from gaseous atom in its ground state. The 2nd ionisation energy (IE_(2)) is the additional energy needed to remove the 2nd electron and so on. The successive ionisation energy of any species is increasing always. Generally, the first ionisation energy increase along a period. But there are some exceptions. One which is not an exception is:

Some Exceptional cases

An element having high first ionization energy in a given period is:

The rate of a reaction can be increased in general by all the factors except

Why does the first ionisation energy increase as we go from left to right along a given period of periodic table?

DINESH PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-All Questions
  1. The first ionisation potential of Na,Mg,Al and Si are in the order

    Text Solution

    |

  2. What is the correct decreasing order of ionic radii of following ions?

    Text Solution

    |

  3. Generally, the first ionization energy increases along a period. But t...

    Text Solution

    |

  4. The correct order of decreasing ionic radii among the following isoele...

    Text Solution

    |

  5. Among the following, the third ionisation energy is highest for

    Text Solution

    |

  6. Which of the element is expected to have lowest first ionisation entha...

    Text Solution

    |

  7. Generally, the first ionisation energy increases along a period. But t...

    Text Solution

    |

  8. The electronic configuration of two elements X and Y are given below: ...

    Text Solution

    |

  9. In the periodic table, the basic character of oxides

    Text Solution

    |

  10. Which of the following orders regarding ionisation energy is correct?

    Text Solution

    |

  11. Among the following which has the highest cation to anion size ratio ...

    Text Solution

    |

  12. Which of the following two elements in the periodic table are expected...

    Text Solution

    |

  13. The outer electronic configuration of Gd (At.No. 64) is

    Text Solution

    |

  14. Which of the following has the highest size ?

    Text Solution

    |

  15. The correct decreasing order of first ionisation enthalpies of five el...

    Text Solution

    |

  16. The second ionization energies of Li, Be, B and C are in the order

    Text Solution

    |

  17. Identify the wrong statements in the following

    Text Solution

    |

  18. The increasing order of the ionic radii among the following isoelectro...

    Text Solution

    |

  19. The element with positive electron gain enthalpy is

    Text Solution

    |

  20. The correct order of electronegativities of N,O, F and P is

    Text Solution

    |