Home
Class 11
CHEMISTRY
Define various types of atomic radii. Wh...

Define various types of atomic radii. Why is covalent radius smaller than metallic and van der Waals' radii ? How do atomic radii vary in a group and in a period.

Text Solution

Verified by Experts

Metallic radius is half the distance between centre of nuclei of two atoms of metal held together by metallic bond.
van der Waals radius is half of the distance between centre of nuclei of two atoms held by weak van der Waals forces of attraction.
Promotional Banner

Topper's Solved these Questions

  • APPENDIX - INORGANIC VOLUME 1

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercise Short|146 Videos

  • APPENDIX - INORGANIC VOLUME 1

    CENGAGE CHEMISTRY ENGLISH|Exercise chapter-2 Multiple correct answer|2 Videos

  • APPENDIX - INORGANIC VOLUME 1

    CENGAGE CHEMISTRY ENGLISH|Exercise chapter-7 Single correct answer|1 Videos

  • ALKYNES

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercises (Archives - Analytical and Desriptive Type)|4 Videos

  • ATOMIC STRUCTURE

    CENGAGE CHEMISTRY ENGLISH|Exercise Concept Applicationexercise(4.3)|19 Videos

Similar Questions

Explore conceptually related problems

Why is van der Waals' radius of an atom greater than its covalent radius

Why is the atomic radius of gallium smaller than that of aluminium?

Which of the following van der Waals radii is the largest ?

The atomic radii of transition elements in a period are.

The correct order of atomic radii in group 13 elements is

Which of the following radii of an atom is the smallest and why? Covalent radius, crystal radius, van der Waals' radius

How do atomic radii vary in a period and in a group? How do you explain the variation?

How do atomic radii vary (a) down the group and (b) along the period from left to right?

Define electron gain enthalpy. Explain why electron gain enthalpies of some elements are positive. How does electron gain enthalpy vary in a group and in a period ?

Atomic radii of Ti, Zn and Hf vary.

CENGAGE CHEMISTRY ENGLISH-APPENDIX - INORGANIC VOLUME 1-Exercise very short
  1. Alkali metals have low ionisation energy. Why is it so?

    Text Solution

    |

  2. Why lanthanides and actinides have been placed separately in the perio...

    Text Solution

    |

  3. Why does the solubility of alkaline earth metal hydroxides in water in...

    Text Solution

    |

  4. Explain : Cation has smaller size than neutral atom. ……………………………...

    Text Solution

    |

  5. Explain : Anion has larger size than neutral atom. ……………………………………...

    Text Solution

    |

  6. Which of the following species will have the largest and the smallest ...

    Text Solution

    |

  7. Which has the largest ionic radius Ca^(2+),Mg^(2+),Ba^(2+)?

    Text Solution

    |

  8. Define various types of atomic radii. Why is covalent radius smaller t...

    Text Solution

    |

  9. Electronegativity is

    Text Solution

    |

  10. Define electronegativity. How does it vary in the periodic table?

    Text Solution

    |

  11. Write the general outer electronic configuration of s-, p-, d- and f- ...

    Text Solution

    |

  12. What is the nature of oxides formed by most of p-block elements?

    Text Solution

    |

  13. Indentify the atom or ion which has larger radius in each of the follo...

    Text Solution

    |

  14. Among the elements , Li, K, Ca, Cl and Kr, the element K has the lowes...

    Text Solution

    |

  15. Which element in each of the following pairs of elements would you exp...

    Text Solution

    |

  16. Ionisation potential increases in a period from left to right because

    Text Solution

    |

  17. Which out of the N or O has higher electron gain enthalpy?

    Text Solution

    |

  18. Which of the following pairs would have a larger size? Explain. Br "...

    Text Solution

    |

  19. Atomic number (Z) of elements is 108. Write its electronic configurati...

    Text Solution

    |

  20. Out of Na and Mg which has higher second ionisation energy?

    Text Solution

    |