Home
Class 11
CHEMISTRY
Which of the following pair of elements ...

Which of the following pair of elements have same number of electron in their outermost shell
(1)Na ,Sr
(2) Se , Te
(3)Mn , Fe
(4) As, Bi

Text Solution

Verified by Experts

The correct Answer is:
(2), (4)
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL BONDING AND MOLECULAR STRUCTURE

    PATHFINDER|Exercise QUESTION BANK|374 Videos

  • ENVIRONMENTAL CHEMISTRY

    PATHFINDER|Exercise QUESTION BANK|157 Videos

Similar Questions

Explore conceptually related problems

Select the pair of atoms having the same no. of electrons in their outermost shell-

Which of the following pair of species have same number of atoms under similar conditions ?

Which of the following species have the same number of electrons in its outermost as well as penultimate shell ?

Which of the following pairs of elements would have higher electron gain enthalpy? (a) N or O , (b) F or Cl . Explain.

Which of the following species has same number of unpaired electrons? (1) Cr^(3+) (2) Mn^(2+) (3) Fe^(3+) (4) Cu^(2+)

Which of the following pairs of atomic numbers represent elements belonging to the same group

Which have the samme number of s-electrons as the d-electrons in Fe^(2+) -

Because of lanthanide contraction, which of the following pairs of elements have nearly same atomic radii (Number in the parenthesis are atomic numbers)-

PATHFINDER-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-QUESTION BANK
  1. Which of the following is/are the correct order of ionic mobility ? (1...

    Text Solution

    |

  2. Stability order of +3 and +1 states of boron family element is (1) Ga...

    Text Solution

    |

  3. Which of the following pair of elements have same number of electron i...

    Text Solution

    |

  4. Select the correct statement (1)E.A. of F more than O (2) Electron af...

    Text Solution

    |

  5. Which of the following oxides are amphoteric . (1) BeO (2) SnO (3) Z...

    Text Solution

    |

  6. Which of the following species has same number of unpaired electrons? ...

    Text Solution

    |

  7. Screening effect is the effect produced by intervening electrons betwe...

    Text Solution

    |

  8. Screening effect is the effect produced by intervening electrons betwe...

    Text Solution

    |

  9. You have given cations A^+ , B^(2+) , C^(3+) D^(3+) The radius of the...

    Text Solution

    |

  10. You have given cations A^+ , B^(2+) , C^(3+) D^(3+) The radius of the...

    Text Solution

    |

  11. Match the following columns

    Text Solution

    |

  12. Match the following columns

    Text Solution

    |

  13. Match the following columns

    Text Solution

    |

  14. Match the following columns

    Text Solution

    |

  15. Match the following columns

    Text Solution

    |

  16. IE and EA values of an element are 13eV and 3.8 eV respectively. Its e...

    Text Solution

    |

  17. How many unpaired electron are present Co^(3+) ion?

    Text Solution

    |

  18. The effective nuclear charge of N atom is :

    Text Solution

    |

  19. The ionisation energy of lithium is 500 KJ mol^(-1) The amount of ener...

    Text Solution

    |

  20. How many groups are occupied by P-block element in the long form of pe...

    Text Solution

    |