Home
Class 11
CHEMISTRY
Three elements 'X', 'Y' and 'Z' have ato...

Three elements 'X', 'Y' and 'Z' have atomic numbers 18, 19 and 20 respectively. How many electrons are present in the M shell of these elements?

A

`8, 9, 10`

B

`8, 10, 13`

C

`8, 8, 8`

D

`8, 9, 12`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • STRUCTURE OF ATOM

    NCERT FINGERTIPS|Exercise Higher Order Thinking Skills|11 Videos

  • STRUCTURE OF ATOM

    NCERT FINGERTIPS|Exercise NCERT Exemplar|15 Videos

  • STRUCTURE OF ATOM

    NCERT FINGERTIPS|Exercise Towards Quantum Mechanical Model Of The Town|10 Videos

  • STATES OF MATTER

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • THE P-BLOCK ELEMENTS

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

The atomic number of an element M is 26. How many electrons are present in the M-shell of the element in its M^(3+) state

Three elements X , Y and Z have atomic numbers 19 , 37 and 55 respectively . Then the correct statements (s) is / are

The atomic numbers of elements X,Y ,and Z are 19,21 , and 23 , respectively. The number of eletron present in the M shells of these elements follows the order

NCERT FINGERTIPS-STRUCTURE OF ATOM -Quantum Mechanical Model Of Atom
  1. Which of the following is not a correct statement regarding the energi...

    Text Solution

    |

  2. The electrons identified by the following quantum numbers n and l: (i)...

    Text Solution

    |

  3. A new electron enters the orbital when:

    Text Solution

    |

  4. How many orbitals in total are associated with 4^(th) energy level?

    Text Solution

    |

  5. Effective nuclear charge (Z(eff)) for a nucleus of an atom is defined ...

    Text Solution

    |

  6. The orbital diagram in which the Aufbau principle is violated is

    Text Solution

    |

  7. Which of the sequences given below shows the correct increasing order ...

    Text Solution

    |

  8. Which of the following configurations does not follow Hund's rule of m...

    Text Solution

    |

  9. Read the following statements and mark the incorrect statement.

    Text Solution

    |

  10. What is the electronic configuration of O^(2-) ion?

    Text Solution

    |

  11. Which atom (X) is indicated by the following configuration? Xto[Ne]3...

    Text Solution

    |

  12. Which of the following configurations represents the most electronegat...

    Text Solution

    |

  13. Which one of the following configurations represents a noble gas?

    Text Solution

    |

  14. An element has 13 electrons in its M shell and 1 electron in N shell i...

    Text Solution

    |

  15. Match the column I with column II and mark the appropriate choice.

    Text Solution

    |

  16. Which of the following quantum numbers are correct for the outermost e...

    Text Solution

    |

  17. The configuration of the valence orbital of an element with atomic num...

    Text Solution

    |

  18. Three elements 'X', 'Y' and 'Z' have atomic numbers 18, 19 and 20 resp...

    Text Solution

    |

  19. What is the atomic number of the element which has 3d^(6) as its outer...

    Text Solution

    |

  20. Study the orbital diagrams of two atoms 'X and Y'. Which subshell will...

    Text Solution

    |