Home
Class 7
CHEMISTRY
Mass of total positive charge present in...

Mass of total positive charge present in an atom is 55110 times to that of mass of electron . Write the electronic configuration of the element.

A

2, 8 , 9 , 2

B

2 , 8 , 18 , 1

C

2, 8 , 18 , 2

D

2 , 8 , 8 2

Text Solution

Verified by Experts

The correct Answer is:
3
We know that mass of a proton is 1837 times that of an electron.
`:.` Atomic number of element `=(55110)/(1837)=30`
`:.` Electronic configuration of the element is 2 , 8 , 18 , 2
Promotional Banner

Topper's Solved these Questions

  • ATOMIC STRUCTURE AND TRANSFORMATION OF MATTER

    PEARSON IIT JEE FOUNDATION|Exercise Level -3|5 Videos

  • ATOMIC STRUCTURE AND TRANSFORMATION OF MATTER

    PEARSON IIT JEE FOUNDATION|Exercise Assessment Test 1|15 Videos

  • ATOMIC STRUCTURE AND TRANSFORMATION OF MATTER

    PEARSON IIT JEE FOUNDATION|Exercise CONCEPT APPLICATION Level -1|39 Videos

  • AIR AND OXYGEN

    PEARSON IIT JEE FOUNDATION|Exercise Assemssment Test-2|15 Videos

  • CHEMISTRY IN DAILY LIFE

    PEARSON IIT JEE FOUNDATION|Exercise MOCK TEST|25 Videos

Similar Questions

Explore conceptually related problems

Write electronic configuration of element E.

Write general electronic configuration of p -block elements.

An element has atomic number 37 the electronic configuration of the element is

PEARSON IIT JEE FOUNDATION-ATOMIC STRUCTURE AND TRANSFORMATION OF MATTER-Level -2
  1. If a dispositve ion of an element 'X' consists of 12 protons and 12 ...

    Text Solution

    |

  2. If a uninegative ion has 10 neutrons and 9 protons , electronic con...

    Text Solution

    |

  3. Mass of total positive charge present in an atom is 55110 times to th...

    Text Solution

    |

  4. The ratio of difference in the number of electrons between K and M sh...

    Text Solution

    |

  5. 2KMnO(4)+H(2)SO(4)+H(2)C(2)O(4)toK(2)SO(4)+2MnSO(4)+10CO(2)+8H(2)O ...

    Text Solution

    |

  6. Heating of a mixture consisting of potassiumm nitrate , carbon and sul...

    Text Solution

    |

  7. CuSO(4)+XtoXSO(4)+Cu,CuSO(4)+YtoYSO(4)+Cu, XSO(4)+YtoNo reactio...

    Text Solution

    |

  8. A metal M shows variable valencies 2 and 3. Calculate the ratio of o...

    Text Solution

    |

  9. Identify the formula of the corresponding hydride of a nonmetal 'X' w...

    Text Solution

    |

  10. The number of valence electrons in the valece shells , 1 , 2 , 3 of t...

    Text Solution

    |

  11. The number of neutrons are equal to the number of protons present in ...

    Text Solution

    |

  12. Tripositive ion of an element has 13 protons and 14 neutrons . Calcul...

    Text Solution

    |

  13. The ratio of number of electrons present I four shells of an element i...

    Text Solution

    |

  14. The difference in the number of elelctrons between K, L and L, M shell...

    Text Solution

    |

  15. The colour change of CuSO(4) solution can observed when it is made to ...

    Text Solution

    |

  16. Identify the ratio of the coefficients of the products CuO,NO(2) and H...

    Text Solution

    |

  17. Which of the following chemical change is a photolytic decomposition r...

    Text Solution

    |

  18. While explaining modern concept of atom , Jack asked the teacher " wh...

    Text Solution

    |

  19. A stable neutral atom 'X' contains two completely filled orbits . Find...

    Text Solution

    |

  20. Mass of total positive charge present in an atom is 7348 times to th...

    Text Solution

    |