Home
Class 12
CHEMISTRY
The number of elements present in the fo...

The number of elements present in the fourth period is

A

32

B

8

C

18

D

2

Text Solution

Verified by Experts

The correct Answer is:
C
The fourth period of modern periodic table starts with potassium (K, Z=19) and ends with krypton (Kr, Z=36). So the number elements of present in fourth period (ie, From 19 to 36) is 18.
Promotional Banner

Topper's Solved these Questions

  • CHEMISTRY IN EVERYDAY LIFE

    SIA PUBLICATION|Exercise MCQs|36 Videos

  • d AND f BLOCK ELEMENTS

    SIA PUBLICATION|Exercise MCQ"s|53 Videos

Similar Questions

Explore conceptually related problems

Mention the number of elements present in each of the periods in the long form of table?

Mention the number of elements present in each of the periods in the long form periodic table.

The maximum number of elements present in fifth period :

Write the atomic number of the element, present in the third period and seventeenth group of the periodic table.

Write the atomic number of the element, present in the third period and seventeenth group of the periodic table.

If the atomic number of an element is 36, the number of electrons present in the M-shell is

Discuss the relation between the number of electron filled into the sub energy levels of an orbit and the maximum number of elements present in a period.

SIA PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODIC PROPORTIES-MCQ
  1. The increasing order of the atomic radius of Si,S,Na, Mg, Al is

    Text Solution

    |

  2. The number of electrons in the valence shell of the central atom of a ...

    Text Solution

    |

  3. The number of elements present in the fourth period is

    Text Solution

    |

  4. Which one of the following is correct order of second ionisation poten...

    Text Solution

    |

  5. Which one of the following order is correct for the first ionisation e...

    Text Solution

    |

  6. The atomic numbers of elements A, B, C and D are Z-1, Z, Z + 1 and Z +...

    Text Solution

    |

  7. Observe the following statements. Q I. The physical and chemical prope...

    Text Solution

    |

  8. Identify the correct order in which the covalent radius of the followi...

    Text Solution

    |

  9. Which of the following is a favourable factor for cation formation?

    Text Solution

    |

  10. Which one of the following represents the correct order of electronega...

    Text Solution

    |

  11. The electronic configuration of elements A, B, and C are [He] 2s^(1), ...

    Text Solution

    |

  12. lonic radii (in oversetoA) of As^(3+), Sb^(3+) and Bi^(3+) follow the ...

    Text Solution

    |

  13. Let electronegativity, ionisation energy and electron affinity be repr...

    Text Solution

    |

  14. The element with atomic number 12 belongs to ….. group and…... period.

    Text Solution

    |

  15. The general electronic configuration of group III elements

    Text Solution

    |

  16. Which of the following has the highest first IP?

    Text Solution

    |

  17. O^(2-) and Si^(4+)are isoelectronic ions. If the ionic radius of O^(2-...

    Text Solution

    |

  18. Which of the following species has the highest ionisation potential?

    Text Solution

    |

  19. As per the Modern periodic law, the physical and chemical properties o...

    Text Solution

    |

  20. Which one of the following elements has the highest first ionisation p...

    Text Solution

    |