Home
Class 11
CHEMISTRY
Atomic numbers of few elements are given...

Atomic numbers of few elements are given below which of the pairs belongs to s-block?

A

7,4

B

3,20

C

8,15

D

9,17

Text Solution

Verified by Experts

The correct Answer is:
B
Z=3,`1s^(2)2s^(1)`,Z=20,`1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2)`
Promotional Banner

Topper's Solved these Questions

  • CLASSIFICATION OF ELEMENTS AND PERIODICITY

    NCERT FINGERTIPS|Exercise Periodic Trends In Properties Of Elements|59 Videos

  • CLASSIFICATION OF ELEMENTS AND PERIODICITY

    NCERT FINGERTIPS|Exercise Higher Order Thinking Skills|10 Videos

  • CLASSIFICATION OF ELEMENTS AND PERIODICITY

    NCERT FINGERTIPS|Exercise Electronic Configuration Of Elements And Periodic Table|9 Videos

  • CHEMICAL BONDING & MOLECULAR STRUCTURE

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • ENVIRONMENTAL CHEMISTRY

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

The atomic numbers of few elements are given below: Which of them can be considered as trans fermium elements?

Number of s-block elements are:

Number of s-block elements are:

Atomic number of a few elements are given below 10, 20, 7, 14 Identify the elements.

Atomic number of a few elements are given below 10, 20, 7, 14 What would be the electronic configuration for each of these elements?

Atomic number of a few elements are given below 10, 20, 7, 14 Identify the Periods of these elements in the Periodic Table.

Atomic number of a few elements are given below 10, 20, 7, 14 Identify the Group number of these elements in the Periodic Table.

Atomic number of a few elements are given below 10, 20, 7, 14 Determine the valency of these elements.

NCERT FINGERTIPS-CLASSIFICATION OF ELEMENTS AND PERIODICITY -Electronic Configuration And Type Of Elements
  1. Match the atomic numbers given in column I with the block in which the...

    Text Solution

    |

  2. Atomic numbers of few elements are given below which of the pairs belo...

    Text Solution

    |

  3. Which of the following has the same number of electrons in its outermo...

    Text Solution

    |

  4. An element has the electronic configuration 1s^(2)2s^(2)2p^(6)3s^(2)3p...

    Text Solution

    |

  5. Fill in the blanks by picking the correct option there aregroups andpe...

    Text Solution

    |

  6. Which block of the periodic table contains elements with the general e...

    Text Solution

    |

  7. Examples of elements belonging to s,p,d or block are given below.Ident...

    Text Solution

    |

  8. Electron configurations of few elements are given below,Mark the incor...

    Text Solution

    |

  9. Few general names are given along with their valence shell configurati...

    Text Solution

    |

  10. The electronic configuration of four elements are given below. Which e...

    Text Solution

    |

  11. There are two rows of inner transition elements in the periodic table ...

    Text Solution

    |

  12. Which of the following contains the maximum number of unpaired electro...

    Text Solution

    |

  13. In the long form of periodic table all the non-metals are placed under

    Text Solution

    |

  14. Part of the periodic table showing p-block is depicted below.What are ...

    Text Solution

    |

  15. The electronic configuration for some neutral atoms are given below : ...

    Text Solution

    |

  16. Match the column I,II and III and mark the appropriate choice.

    Text Solution

    |

  17. Which of the following statements is not correct for the periodic clas...

    Text Solution

    |

  18. Indicate the wrong statement on the basis of the periodic table.

    Text Solution

    |

  19. Which is the most non-metallic elements amongs the following?

    Text Solution

    |

  20. Which of the following groups contains metals.non-metals and metalliod...

    Text Solution

    |