Home
Class 11
CHEMISTRY
Assertion: The atomic radii of the eleme...

Assertion: The atomic radii of the elements of the oxygen family are smaller than the atomic radii of corresponding elements of the nitrogen family.
Reason: The members of the oxygen family are more electronegative because they have lower values of nuclear charge, than those of the nitrogen family.

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
Assertion : It is true, Across the period for addition of each successive element, the nuclear charge increases by one unit as electros are added in the same shell. Hence the size of atom decreases along the period from left to right.
Reason: The higher electronegativity of `O` than `N` is due to more nuclear charge in `O` than `N`.
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

Statement-1: The atomic radii of the elements of the oxygen family are smaller than the atomic radii of the corresponding elements of the nitrogen family. Statement-2: The members of the oxygen family are more electronegative and thus have lower values of nuclear charge than those of the nitrogen family.

Assertion (A) : The atomic radil of the electrons of oxygen family are smaller than the atomic radil of corresponding electrons of the nitrogen family Reason (R ) : The members of oxygen family are all more electromagative and thus have lower value of nuclear tahn those of the nitrogen famoly

Why is the atomic radius of oxygen slightly more than that of nitrogen?

Why are pentahalides more covalent than trihalides in the members of the nitrogen family ?

The correct increasing order of the atomic radii of the elements oxygen, fluorine and nitrogen:

Atoms of the transition element are smaller than those of the s-block elements, because :

Atoms of the transition elements are smaller than those of the s-block elements, because:

The atomic radii of the metals of the third (5d) series of transitions elements are virtually the same as those of the corresponding members of the second (4d) series. Explain.

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

    |