Home
Class 9
CHEMISTRY
Write down the formulae of (i) sodium...

Write down the formulae of
(i) sodium oxide
(ii) aluminium chloride
(iii) sodium suphide
(iv) magnesium hydroxide

Text Solution

Verified by Experts

(i) Formula of sodium oxide (made of sodium Na and oxygen O) :

Thus, the formula of sodium oxide is `Na_(2)O`
(ii) Formula of aluminium chloride (made of aluminium Al and chlorine Cl) :

Thus, the formula of aluminium chloride is `AlCl_(3)`.
(iii) Formula of sodium sulphide (made of sodium Na and sulphur S) :

Thus, the formula of sodium sulphide is `Na_(2)S`.
Formula of magnesium hydroxide (made of magnesium `Mg` and hydroxide `OH`) :

Thus, the formula of magnesium hydroxide is `Mg(OH)_(2)`
Promotional Banner

Topper's Solved these Questions

  • ATOMS AND MOLECULES

    LAKHMIR SINGH & MANJIT KAUR|Exercise Exercise|205 Videos

  • IS MATTER AROUND US PURE

    LAKHMIR SINGH & MANJIT KAUR|Exercise NCERT BOOK PAGE 24|1 Videos

Similar Questions

Explore conceptually related problems

Write down the formulae of (i) sodium oxide (ii) aluminium chloride (iii) sodium sulphide (iv) magnesium hydroxide

Write the formulae of sodium oxide

Write down the formulae of (i) aluminium hydroxide, (ii) hydrogen sulphide (iii) ammonium sulphate, (iv) sodium carbonate (v) calcium phosphate, (vi) potassium chromate.

The actual formula of sodium chloride is

Formula mass of sodium chloride is

(a) What is an ion ? How is an ion formed ? Explain with the help of two examples of different ions. (b) The valencies (or charges) of some of the ions of are given below : Using this information, write down the formulae of the following compunds : (i) Sodium phosphate , (ii) Ammonium sulphate (iii) Calcium hydroxide , (iv) Lead bromide

LAKHMIR SINGH & MANJIT KAUR-ATOMS AND MOLECULES-Exercise
  1. Define the atomic mass unit.

    Text Solution

    |

  2. Why is it not possible to see an atom with naked eyes?

    Text Solution

    |

  3. Write down the formulae of (i) sodium oxide (ii) aluminium chlor...

    Text Solution

    |

  4. Write down the names of compounds represented by the following formula...

    Text Solution

    |

  5. What is meant by the term chemical formula?

    Text Solution

    |

  6. How many atoms are present in a (i) H(2)S molecule and (ii) PO...

    Text Solution

    |

  7. Calculate the molecular masses of H(2), O(2), Cl(2), CO(2), CH(4), C(2...

    Text Solution

    |

  8. Calculate the formula unit masses of ZnO, Na(2)O, K(2)CO(3), given ato...

    Text Solution

    |

  9. If one mole of carbon atoms weighs 12 grams, what is the mass (in gram...

    Text Solution

    |

  10. Which has more number of atoms, 100 grams of sodium or 100 grams of ir...

    Text Solution

    |

  11. A 0.24 g sample of compound of oxygen and boron was found by analysis ...

    Text Solution

    |

  12. When 3.0 g of carbon is burnt in 8.0 g oxygen, 11.0 g of carbon dioxid...

    Text Solution

    |

  13. What are polyatomic ions? Give examples.

    Text Solution

    |

  14. Write the chemical formulae of the following. (a) Magnesium chlorid...

    Text Solution

    |

  15. Give the names of the elements present in the following compounds. ...

    Text Solution

    |

  16. Calculate the molar mass of the following substances. (a) Ethyne, ...

    Text Solution

    |

  17. What is the mass of : (a) 1 mole of nitrogen atoms ? (b) 4 moles o...

    Text Solution

    |

  18. Convert into moles : (a) 12 g of oxygen gas (b) 20 g of water ...

    Text Solution

    |

  19. What is the mass of : (a) 0.2 mole of oxygen atoms? (b) 0.5 mole...

    Text Solution

    |

  20. Calculate the number of molecules of sulphur (S(8)) present in 16 g of...

    Text Solution

    |