Home
Class 9
CHEMISTRY
There are four elements P,Q,R and S havi...

There are four elements P,Q,R and S having atomic numbers of 4,18,10 and 16 respectively. The element which can exhibit covalency as well as electrovalency will be :

A

P

B

Q

C

R

D

S

Text Solution

Verified by Experts

The correct Answer is:
D
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

Elements P, Q R and S have atomic numbers 11, 15, 17 and 18 respectively. Which of them are reactive non-metals?

Elements P, Q, R and Shave atomic numbers 11, 15, 17 and 18 respectively. Which of them are reactive non-metals?

Five elements A,B,C,D and E have atomic numbers of 2,3,7,10 and 18 respectively. The elements which belong to the same period of the periodic table are:

There are four elements 'P' , 'q' , 'r' and 's' having atomic numbers Z-1, Z, Z+1 and Z+2 respectively. If the element 'q' is an insert gas, select the correct answer from the following statements. (i) 'p' has most negative electron gain enthalpy in the respective period. (ii) 'r' is an alkali metal (iii) 's' exists in stable +1 oxidation state.

Elements P, Q, R and S have atomic numbers 11, 15, 17 and 18 respectively, Which of them are reactive non-metals?

An element which can exhibit valencies of 2, 4 and 6 can be :

LAKHMIR SINGH & MANJIT KAUR-STRUCTURE OF ATOM-Exercise
  1. Four elements W,X,Y and Z contain 8,11,9 and 17 protons per atom respe...

    Text Solution

    |

  2. The four atomic species can be represented as follows. Out of these, t...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  5. The isotopes of an element contain :

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |