Home
Class 12
CHEMISTRY
Why are the elements of Group - 18 known...

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

Text Solution

Verified by Experts

Group 18 elements have their valence shell orbitals are completely filled. Hence they are inert towards chemical activity. Therefore grup-18 elements are known as noble gases.
Promotional Banner

Topper's Solved these Questions

  • THE 'd' - AND 'f' - BLOCK ELEMENTS

    SUBHASH PUBLICATION|Exercise Question and Answer|62 Videos

  • THE SOLID STATE

    SUBHASH PUBLICATION|Exercise PROBLEM SECTION|16 Videos

Similar Questions

Explore conceptually related problems

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

The valency of any element of group 18 is

Give common names of noble gases.

Why are transition elements knows as d-block elements ?

Based on the group valency of elements state the formula for the following giving justification for each : (i) Oxides of 1^(st) group elements, (ii) Halides of the elements of group 13, and (iii) Compounds formed when an element of group 2 combines with, an element of group 16.

Based on the group valency of elements state the formula for the following giving justification for each: i] Oxides of Ist group elements, ii] Halides of the elements of group 13, and iii] Compounds formed when an element of group 2 combines with elements of group 16 .

Ionisation enthalpy decreases down the group in noble gases. Why ?

SUBHASH PUBLICATION-THE 'P'-BLOCK ELEMENTS-EXERCISE
  1. Complete the following reactions. 2FeSO(4)+H(2)SO(4)+Cl(2)rarr

    Text Solution

    |

  2. Complete the following reactions. Cl(2)+3F(2)rarr

    Text Solution

    |

  3. Complete the equation SO(2)+Cl(2)+2H(2)Orarr?

    Text Solution

    |

  4. Which halogen has highest electron affinity or electron gain enthalpy ...

    Text Solution

    |

  5. Show that chlorine is a bleaching agent.

    Text Solution

    |

  6. What is an aqua regia ? Give its one use.

    Text Solution

    |

  7. Give the structure of ( a ) Hypochlorous acid ( b ) chlorous acid ( ...

    Text Solution

    |

  8. Which is the strongest acid among the hydrogen halides? Give one reaso...

    Text Solution

    |

  9. Give reason ''BrF(5) Is more reactive than Br(2)''

    Text Solution

    |

  10. What is the shape of ClF(3),BrF(5),IF(7) molecules.

    Text Solution

    |

  11. Interhalogen compounds are more reactive than halogens. Give reason.

    Text Solution

    |

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

    Text Solution

    |

  13. What is the commercial sources of helium?

    Text Solution

    |

  14. Complete the following equation. .(88)^(226)Rararr.(88)^(226)Rn+.........

    Text Solution

    |

  15. Noble gases have vary low boiling point. Why?

    Text Solution

    |

  16. Give reason for chemical inertness of noble gases.

    Text Solution

    |

  17. Name the noble gas which does not have general noble gas configuration...

    Text Solution

    |

  18. Name the noble gas obtained as a decay product of..^(226)R

    Text Solution

    |

  19. Complete the following equation.

    Text Solution

    |

  20. Write the general electronic configuration of noble gases.

    Text Solution

    |