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प्रश्न
What are (i) ionic compounds, and (ii) molecular compounds ? Give two examples of each type of compounds.
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उत्तर
Ionic Compounds: Ionic compounds that consist of oppositely-charged ions held together by strong electrostatic forces. In an ionic compound, positively-charged ions, cations, and negatively-charged ions, anions, are chemically bonded by ionic bonds.
Examples of ionic compounds: NaCl – It comprises positively-charged sodium ions chemically bonded to the negatively-charged chloride ions.
Similarly, CuSO4 comprises positively-charged copper ions chemically bonded to the negatively-charged sulphate ions.
Molecular compounds: Molecular compounds consist of molecules of two or more elements that are chemically bonded. Molecular compounds are made up of electrically-neutral molecules and not electrically-charged ions.
Examples of molecular compounds: SO2 – It consists of electrically-neutral sulphur chemically bonded to two atoms of oxygen.
Similarly, NH3 consists of electrically-neutral nitrogen atom chemically bonded to three atoms of hydrogen.
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संबंधित प्रश्न
Give the name of the element present in the following compound:
Potassium sulphate
Write the formulae of the following compounds. Also name the elements present in them.
- Water
- Ammonia
- Methane
- Sulphur dioxide
- Ethanol
In what form does oxygen gas occur in nature ?
The cation of an element has :
Molecular compounds are usually formed by the combination between :
An element A forms an oxide A2O5.
What is the valency of element A ?
Explain the term – molecules. Give three examples of atoms of the same element forming a molecule. State the atomicity of the same.
Give one example of a polyatomic molecule.
If a molecule is made of similar kinds of atoms, then it is called ______ atomic molecule.
Which of the following contains maximum number of molecules?
