Home
Class 11
CHEMISTRY
Fourth period has 18 elements and not 52...

Fourth period has 18 elements and not 52. Explain.

Text Solution

Verified by Experts

The rest of the 14 elements are present in the f-Block as first inner transition series.
Promotional Banner

Topper's Solved these Questions

  • P-BLOCK ELEMENTS

    PATHFINDER|Exercise QUESTION BANK|161 Videos

  • REDOX REACTIONS

    PATHFINDER|Exercise QUESTION BANK|42 Videos

Similar Questions

Explore conceptually related problems

Can the equivalent mass of an element be zero? Explain.

The equivalent mass of a certain element may vary. Explain.

Explain why, the properties of elements are repeated 2,8,18 and 32 elements in the periodic table.

If X and Y are two sets such that X ∪ Y has 18 elements, X has 8 elements and Y has 15 elements , how many elements does X ∩ Y have?

Let A has 3 elements and B has 6 elements What can minimum number of elements in A cup B

If X and Y are two sets such that X ∪ Y has 50 elements, X has 28 elements and Y has 32 elements, how many elements does X ∩ Y have ?

If S and T are two sets such that S has 21 elements, T has 32 elements, and S ∩ T has 11 elements, how many elements does S ∪ T have?

If X and Y are two sets such that (X cup Y) has 60 elements ,X has 38 elements and Y has 42 elements, how many elements does (X cap Y) have ?

Is the equivalent weight of element a variable quantity explain.

Period 6 consists of ____elements.

PATHFINDER-PERIODIC CLASSIFICATION OF ELEMENTS AND PERIODIC PROPERTIES-QUESTION BANK
  1. Which one of the iso-electronic ions K^+ , Cl^- , S^(2-) and Ca^(2++) ...

    Text Solution

    |

  2. Which important property did Mendeleev use to classify the elements in...

    Text Solution

    |

  3. Fourth period has 18 elements and not 52. Explain.

    Text Solution

    |

  4. Give the general electronic configuration of 's' and 'p'-block element...

    Text Solution

    |

  5. What are 'transition' elements?

    Text Solution

    |

  6. What do you mean by 'inner-transition elements'?

    Text Solution

    |

  7. Give the Electronic configuration and position of the elements in the ...

    Text Solution

    |

  8. Why are the cations smaller than atom?

    Text Solution

    |

  9. To which block does the element with atomic number 50 belong?

    Text Solution

    |

  10. Arrange the increasing order of atomic radii Li, Na, K.

    Text Solution

    |

  11. Which is largest among Ca^(+2), Mg^(+2) , Ba^(+2) and why?

    Text Solution

    |

  12. Which of the elements Na, Mg, Si and P have the geatest difference bet...

    Text Solution

    |

  13. Why Gr-17 elements acts as good oxidising agent?

    Text Solution

    |

  14. Arrange Cl, Cl^- , Cl^+ in the increasing order of size?

    Text Solution

    |

  15. How does metallic character vary in the group and period?

    Text Solution

    |

  16. State the decreasing order of the penetration power of orbitals.

    Text Solution

    |

  17. An element has on atomic number = 53. State its position in the Period...

    Text Solution

    |

  18. The Reason for diagonal relationship is -

    Text Solution

    |

  19. The order of ionic redius of N^(3-), O^(2-), F^- and Na^+ is -

    Text Solution

    |

  20. What are actinones?

    Text Solution

    |