Advertisements
Advertisements
प्रश्न
What are (i) ionic compounds, and (ii) molecular compounds ? Give two examples of each type of compounds.
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Write down the name of a compound represented by the following formula:
Al2(SO4)3
Write down the name of a compound represented by the following formula:
KNO3
Calculate the number of molecules of sulphur (S8) present in 16 g of solid sulphur.
Define: Atomic number
In what form does oxygen gas occur in nature ?
An element A forms an oxide A2O5.
What is the valency of element A ?
Give one example of a polyatomic molecule.
State the atomicity of the following:
Oxygen
Classify the following molecules as the molecules of element or compound
| 1. |  |
|
| 2. |  |
|
| 3. |  |
|
| 4. |  |
Which of the following is a triatomic molecule?
