Home
Class 10
CHEMISTRY
(a) Why does the side of the atoms progr...

(a) Why does the side of the atoms progressively become smaller when we move from sodium `(Na)` to chlorine `(Cl)` in the third period of the periodic table?
(b) Helium and neon are unreactive gases. What if anything do their atoms have in common?

Text Solution

Verified by Experts

The correct Answer is:
(b) Helium and neon atoms have completely filled outermost electron shells (containing the maximum number of electrons which can be accommodated in them)
NA
Promotional Banner

Topper's Solved these Questions

  • PERIODIC CLASSIFICATION OF ELEMENTS

    LAKHMIR SINGH & MANJIT KAUR|Exercise SHORT ANSWER TYPE|8 Videos

  • PERIODIC CLASSIFICATION OF ELEMENTS

    LAKHMIR SINGH & MANJIT KAUR|Exercise LONG ANSWER TYPE|3 Videos

  • PERIODIC CLASSIFICATION OF ELEMENTS

    LAKHMIR SINGH & MANJIT KAUR|Exercise VERY SHORT ANSWER TYPE|6 Videos

  • METALS AND NON-METALS

    LAKHMIR SINGH & MANJIT KAUR|Exercise Short Answer Type Qustions|1 Videos

  • TEST PAPER 1

    LAKHMIR SINGH & MANJIT KAUR|Exercise Section B|4 Videos

Similar Questions

Explore conceptually related problems

Helium is an unreactive gas and neon is a gas of extremely low reactivity. What, if anything, do their atoms have in common?

(a) Lithium, sodium, potassium are all metals that react with water to liberate hydrogen gas. Is there any similarity in the atoms of these elements? (b) Helium is an unreactive gas and neon is a gas of extremely low reactivity. What, if anything, do their atoms have in common?

(a) How does the size of atoms (atomic size) generally vary in ging from left to right in a period of the periodic table? Why does it vary this way? (b) What happens to the metallic character of the elements as we move from left to right in a period of the periodic table?

LAKHMIR SINGH & MANJIT KAUR-PERIODIC CLASSIFICATION OF ELEMENTS-Exercise
  1. (a) How does the atomic size vary on going down form top to bottom in ...

    Text Solution

    |

  2. (a) How does the tendency to lose electrons change as we go down in gr...

    Text Solution

    |

  3. (a) Why does the side of the atoms progressively become smaller when w...

    Text Solution

    |

  4. (a) In the modern Periodic Table, why does cobalt with higher atomic m...

    Text Solution

    |

  5. (a) Explain why the first period of the modern periodic table has only...

    Text Solution

    |

  6. (a) What is a group in the periodic table in which part of a group wou...

    Text Solution

    |

  7. Which of the following statements is not a correct statement about the...

    Text Solution

    |

  8. The electronic configuration of the atom of an element X is 2,8,4. In ...

    Text Solution

    |

  9. The atomic number of an element is 20. In modern periodic table, this ...

    Text Solution

    |

  10. Five elements A, B, C, D and E have atomic numbers of 2, 3, 7, 10 and ...

    Text Solution

    |

  11. The elements A, B, C, D and E have atomic number 9, 11, 17, 12 and 13 ...

    Text Solution

    |

  12. Which of the following elements would lose an electron easily ?

    Text Solution

    |

  13. Which of the following elements does not lose an electron easily ?

    Text Solution

    |

  14. Where would you locate the element with electronic configuration 2,8 i...

    Text Solution

    |

  15. An element which is an essential constituent of all organic compounds ...

    Text Solution

    |

  16. Which of the following is the valence shell for the elements of second...

    Text Solution

    |

  17. The element which has the maximum number of valence electrons is:

    Text Solution

    |

  18. The correct increasing order of the atomic radii of the elements oxyge...

    Text Solution

    |

  19. The atomic numbers of the elements Na, Mg, K and Ca are 11,12,19 and 2...

    Text Solution

    |

  20. Which of the following are the correct characteristics of isotopes of ...

    Text Solution

    |