Home
Class 9
CHEMISTRY
Define or explain : Modern periodic la...

Define or explain :
Modern periodic law.

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

Define a period of the modern periodic table of elements.

What is the basic difference in approach between the Mendeleev's periodic law and the Modern periodic law?

Define or explain : Charles's Law

There is no limitation of Modern periodic table. True/False

Define rate law .

Which one of the following statements related to the modern periodic table is incorrect?

On the basis of quantum numbers, justify that the fourth period of the Modern periodic table should have 18 elements.

The fourth period of modern periodic table includes:

The largest group in Modern periodic table is

Why the third period of Modern periodic table contains 8 elements and not 18 ?

ICSE-SPECIMEN PAPER 2-SECTION -II
  1. Define or explain : Modern periodic law.

    Text Solution

    |

  2. Give reasons : Sodium is kept in an inert solvent.

    Text Solution

    |

  3. Give reasons : Hydrogen is collected by downward displacement of wat...

    Text Solution

    |

  4. Give reasons : Hydrogen is not prepared by reacting conc H(2)SO(4) w...

    Text Solution

    |

  5. Give reasons : Conc. sulphuric acid is used as drying agent.

    Text Solution

    |

  6. Give reasons : Detergents are better than soap.

    Text Solution

    |

  7. Give the test of the gas evolved when dilute sulphuric acid is added t...

    Text Solution

    |

  8. Give the test of the gas evolved when dilute sulphuric acid is added t...

    Text Solution

    |

  9. Give the test of the gas evolved when dilute sulphuric acid is added t...

    Text Solution

    |

  10. Give the test of the gas evolved when dilute sulphuric acid is added t...

    Text Solution

    |

  11. Give an example of a reaction where heat is released.

    Text Solution

    |

  12. Name the substances responsible for permanent hardness

    Text Solution

    |

  13. Explain one method of removing permanent hardness.

    Text Solution

    |

  14. Complete the table by writing the following as basic and acidic radica...

    Text Solution

    |

  15. State the cause of acid rain and mention its impact.

    Text Solution

    |

  16. Explain why : Fused CaCl2 or conc. H2SO4 is used in a desiccator.

    Text Solution

    |

  17. Explain why? conc. sulphuric acid should be stoppered.

    Text Solution

    |

  18. Write balanced equations for the following reactions. Water is react...

    Text Solution

    |

  19. Write balanced equations for the following reactions. Steam is passe...

    Text Solution

    |

  20. Write balanced equations for the following reactions. Ammonium dichr...

    Text Solution

    |

  21. Write balanced equations for the following reactions. Lead reacts wi...

    Text Solution

    |