Home
Class 9
CHEMISTRY
The atomic number of an element X is 8 a...

The atomic number of an element X is 8 and that of element Y is 4. Both these elements can exhibit a valency of :

A

1

B

2

C

3

D

4

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • STRUCTURE OF ATOM

    LAKHMIR SINGH & MANJIT KAUR|Exercise Very Short Answer|1 Videos

  • STRUCTURE OF ATOM

    LAKHMIR SINGH & MANJIT KAUR|Exercise NCERT Book, Page 50|1 Videos

  • STRUCTURE OF ATOM

    LAKHMIR SINGH & MANJIT KAUR|Exercise Value Based Questions|17 Videos

  • MODEL TEST PAPER 5

    LAKHMIR SINGH & MANJIT KAUR|Exercise Section B|2 Videos

Similar Questions

Explore conceptually related problems

The atomic number of an element is 16. Predict its valency

The atomic number of an element variable valency.

The atomic number of an element X is 8 and that of element Y is 12. Write down the symbols of the ions you would expect to be formed from their atoms.

The atomic number of an element which shows a valency of +3 is

The atomic number of an element is 15. Hence, it will show a valency of

Atomic mass of an element is 24 and it contains K neutrons ,valency of the element is

The atomic number of an element X is 16. The symbol of ion formed by an atom of this element will be:

The atomic number of an element is 16. Predict the number of valence electrons in its atom

The atomic number of an element is 19. (a) Write the electronic configuration of the element and determine (i) the valency of the element and (ii) whether the element is a metal or non-metal. (b) Write the formula of the oxide of the element. (c) Is the element more reactive or less reactive than Na (atomic number 11). Justify your answer giving example.

LAKHMIR SINGH & MANJIT KAUR-STRUCTURE OF ATOM-Exercise
  1. The four atomic species can be represented as follows. Out of these, t...

    Text Solution

    |

  2. There are four elements P,Q,R and S having atomic numbers of 4,18,10 a...

    Text Solution

    |

  3. The atomic number of an element X is 8 and that of element Y is 4. Bot...

    Text Solution

    |

  4. The isotopes of an element contain :

    Text Solution

    |

  5. Which is the number of valence electrons in : (a) sodium ion, Na^(+)...

    Text Solution

    |

  6. Atom A has a mass number 209 and atomic number 82 Atomic B has a mas...

    Text Solution

    |

  7. Which of the following pairs are isotopes ? Give reasons for your choi...

    Text Solution

    |

  8. Three different atoms of oxygen are represented as : .(8)^(16)O,.(8)...

    Text Solution

    |

  9. The atomic species A and B have different number of protons but the sa...

    Text Solution

    |

  10. Composition of the nuclei of two atomic species A and B is given as un...

    Text Solution

    |

  11. Which of the following pairs are isobars ? (i) .(26)^(58)A, .(28)^(5...

    Text Solution

    |

  12. The number of protons, neutrons and electrons in particles A to E are ...

    Text Solution

    |

  13. The composition of two atomic particles is given below : {:(,"X","Y"...

    Text Solution

    |

  14. Four students (A),(B),(C) and (D) observed the colour and solubility o...

    Text Solution

    |

  15. The white of an egg, common salt, sugar and fine sand are added to wat...

    Text Solution

    |

  16. The correct procedure of heating iron-sulphur mixture to prepare iron ...

    Text Solution

    |

  17. A student while heating solid lead nitrate taken in a test tube would ...

    Text Solution

    |

  18. The following precautions were listed for the experiment on determinat...

    Text Solution

    |

  19. The correct procedure for preparing a colloidal solution of egg albumi...

    Text Solution

    |

  20. Four students (A), (B), (C) and (D) independently observed the evapora...

    Text Solution

    |