Home
Class 11
CHEMISTRY
Assertion: Sixth period is the longest p...

Assertion: Sixth period is the longest period in the periodic table.
Reason : Sixth period involves the filling of all the orbitals of the sixth energy level.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If the assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
C
Correct Reason: Sixth period does not involve the filling of all the orabital of the sixth energy level (i.e. `6s, 4f,5d,6p`-orbitals are filled).
Promotional Banner

Topper's Solved these Questions

  • CLASSIFICATION OF ELEMENTS AND PERIODICITY OF PROPERTIES

    A2Z|Exercise AIPMT/ NEET Questions|13 Videos

  • CLASSIFICATION OF ELEMENTS AND PERIODICITY OF PROPERTIES

    A2Z|Exercise AIIMS Questions|24 Videos

  • CLASSIFICATION OF ELEMENTS AND PERIODICITY OF PROPERTIES

    A2Z|Exercise Electronegativity And Nature Of Oxides|42 Videos

  • CHEMICAL THERMODYNAMICS

    A2Z|Exercise Section D - Chapter End Test|30 Videos

  • CLASSIFICTION, PURIFICATION AND NOMENCLATURE OF ORGANIC COMPOUNDS

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

The 3rd period of the periodic table contains

The 6^(th) period of the periodic table contains:

The period number in the long form of the periodic table is equal to

A2Z-CLASSIFICATION OF ELEMENTS AND PERIODICITY OF PROPERTIES-Section B - Assertion Reasoning
  1. Assertion: the decreasing order of acidic character of CO(2),N(2)O(5),...

    Text Solution

    |

  2. Assertion: NO is an acidic oxide while CrO(3) is a basic oxide. Reas...

    Text Solution

    |

  3. Assertion: F is more electronegative than Cl. Reason: F has high ele...

    Text Solution

    |

  4. Assertion: E^(@) for Mn^(3+)//Mn^(2+) is more positive than Cr^(3+)//C...

    Text Solution

    |

  5. Assertion: The ionic size of O^(2-) is bigger than that of F^(-) ions....

    Text Solution

    |

  6. Assertion: The ionic radii follows the order: I^(-) lt I lt I^(+). R...

    Text Solution

    |

  7. Assertion: Sixth period is the longest period in the periodic table. ...

    Text Solution

    |

  8. Assertion: Electron gain enthalpy always becomes less negative as we g...

    Text Solution

    |

  9. Assertion: Electron gain enthalpy value of the 3rd peirod p-block elem...

    Text Solution

    |

  10. Assertion: Of the elements , helium has the highest value of first ion...

    Text Solution

    |

  11. Assertion: The first ionisation enthalpy of aluminium is lower than th...

    Text Solution

    |

  12. Assertion: Helium and beryllium have similar outer electronic configur...

    Text Solution

    |

  13. Assertion: the 4f^(-) and 5f^(-) inner transition series of elements a...

    Text Solution

    |

  14. Assertion: The atomic radii of the elements of the oxygen family are s...

    Text Solution

    |

  15. Assertion: F atom has less negative electron gain enthaply than Ci ato...

    Text Solution

    |

  16. Assertion: The first ionisation energy of Be is greater than that of B...

    Text Solution

    |

  17. Assertion: In general, for an element, IE(1) lt IE(2) lt IE(3).... R...

    Text Solution

    |

  18. Assertion: Generally, ionisation enthalpy than beryllium. Reason: Wh...

    Text Solution

    |

  19. Assertion: Boron has a smaller first ionisation enthalpy than berylliu...

    Text Solution

    |

  20. Assertion: Metallic character of first group metals of Modern periodic...

    Text Solution

    |