Home
Class 12
CHEMISTRY
Why are elements of Group-18 known as no...

Why are elements of Group-18 known as noble gases?

Text Solution

Verified by Experts

The elements present in group-18 have their valence shell orbitals completely filled `[ns^(2)np^(6)]`. It is for this reason, they react with a few elements only under certain conditions. That is why, they are known as noble gases.
Promotional Banner

Topper's Solved these Questions

  • P-BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise NCERT EXERCISE QUESTIONS|49 Videos

  • P-BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise HIGHER ORDER THINKING SKILL (HOTS) QUESTIONS|66 Videos

  • P-BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise SOLVED CBSE SCANNER|102 Videos

  • ORGANIC CHEMISTRY : BASIC PRINCIPLES AND TECHNIQUES

    CHHAYA PUBLICATION|Exercise WARM UP EXERICSE|132 Videos

  • POLYMERS

    CHHAYA PUBLICATION|Exercise SOVLED CBSE SCANNER|18 Videos

Similar Questions

Explore conceptually related problems

Why are the elements of group - 16 called chalcogens? Write their general valence shell electronic configuration .

Why are the majority of known noble gas compounds contain xenon?

Why are the majority of known noble gas compounds contain xenon?

Why the elements of Group 14 have high melting points than the elements of group 13.

Which elements are also known as chalcogens ? Why ?

Which element is known as naughty elements?

The elements of group 13 to 18 of the periodic table are known as

The elements of group-15 exhibit catenation but to a lesser extent than elements of group-14-why?

Which is the second most abundant element of group-18 in the universe ( next to hydrogen) ?

CHHAYA PUBLICATION-P-BLOCK ELEMENTS-SOLVED NCERT TEXTBOOK PROBLEMS
  1. Write the conditions to maximise the yield of H(2)SO(4) by Contact pro...

    Text Solution

    |

  2. Why is K(a(2))ltltK(a(1)) for H(2)SO(4) in water?

    Text Solution

    |

  3. Halogens have maximum negative electron gain enthalpy in the respectiv...

    Text Solution

    |

  4. Although electron gain enthalpy of fluorine is less negative as compar...

    Text Solution

    |

  5. Fluorine exhibits only -1 oxidation state whereas other halogens exhib...

    Text Solution

    |

  6. Considering the parameters such as bond dissociation enthalpy, electro...

    Text Solution

    |

  7. Give two examples to show the anomalous behaviour of fluorine.

    Text Solution

    |

  8. Sea is the greatest source of some halogens. Comment.

    Text Solution

    |

  9. Write the balanced chemical equation for the reaction of Cl(2) with ho...

    Text Solution

    |

  10. Give the reason for bleaching action of Cl(2).

    Text Solution

    |

  11. Name two poisonous gases which can be prepared from chlorine gas.

    Text Solution

    |

  12. When HCl reacts with finely powdered iron, it forms ferrous chloride a...

    Text Solution

    |

  13. Deduce the molecular shape of BrF(3) on the basis of VSEPR theory.

    Text Solution

    |

  14. Why is ICI more reactive than I(2) ?

    Text Solution

    |

  15. Why are elements of Group-18 known as noble gases?

    Text Solution

    |

  16. Noble gases have very low boiling points. Why?

    Text Solution

    |

  17. Does the hydrolysis of XeF(6) lead to a redox reaction?

    Text Solution

    |

  18. Why is helium used in diving apparatus?

    Text Solution

    |

  19. Balance the equation: XeF(6) + H(2)OtoXeO(2)F(2)+ HF

    Text Solution

    |

  20. Why has it been difficult to study the chemistry of Rn?

    Text Solution

    |