Home
Class 12
CHEMISTRY
The atomic number of elements X,Y and Z ...

The atomic number of elements X,Y and Z are 19.21 and 25 respectively.The number of electrons present in the M shell of these elements follow yhe order

A

`ZgtXgtY`

B

`XgtYgtZ`

C

`ZgtYgtX`

D

`YgtZgtX`

Text Solution

Verified by Experts

The correct Answer is:
c
The order of number of electrons in m shell is `ZgtYgtX`
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

The number of electrons present in M shell of aluminum atom:

Number of d'electrons present in M shell of Ag+ ion?

The maximum number of electrons present in K shell are

The number of electrons present in M-shell of chromium atom is

What is maximum number of electrons present in M-shell?

The number of elements present in the fourth period is

Number of electrons present in the penultimate shell of magnesium atom.

The atomic number of an element corresponds to :

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

SIA PUBLICATION-ATOMIC STRUCTURE-MCQ.S
  1. The uncertanities in then velocities of two particle A and B are 0.05 ...

    Text Solution

    |

  2. The energy of a photon is 3 xx10^(-12)erg.What is its wavelength in nm...

    Text Solution

    |

  3. The atomic number of elements X,Y and Z are 19.21 and 25 respectively....

    Text Solution

    |

  4. An electrons is moving in Bohr's fourth orbits De-Broglie wavelength s...

    Text Solution

    |

  5. X grams of calcium carbonate was completely burnt in air.The weight of...

    Text Solution

    |

  6. Which of the following elements has least number of e,ectrons in M she...

    Text Solution

    |

  7. What is the volume (inL) of oxygen required at STP to completely con...

    Text Solution

    |

  8. If the electron of a hydrogen atom is present in the first orbit. The ...

    Text Solution

    |

  9. If the wavelength of an electromagnetic radiation is 2000 A. what is i...

    Text Solution

    |

  10. X litre of carbon monoxide is present at mSTP. It is completely oxidi...

    Text Solution

    |

  11. The concentration of a 100 ml solution containing xg of Na(2)CO(3) (mo...

    Text Solution

    |

  12. Which of the following statements are correct?

    Text Solution

    |

  13. The energy of an electromagnetic radiation is 19.875 xx 10^(-13)erg. W...

    Text Solution

    |

  14. Which of the following is not iso-electronic pair?

    Text Solution

    |

  15. The energy of an electron present in Bohr's second orbit of hydrogen a...

    Text Solution

    |

  16. In the ground state, an element has 13 electrons in M shell.The elemen...

    Text Solution

    |

  17. What is the volume (in litres) of oxygen atSTP required for complete c...

    Text Solution

    |

  18. What are the values of n1 and n2 for the 2nd line in the Lyman series ...

    Text Solution

    |

  19. How many electrons are present in the M shell of an atom odf an el,eme...

    Text Solution

    |

  20. What is the vlue ( in litres) of CO2 liberated at STP when 2.12 g of s...

    Text Solution

    |