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प्रश्न
What is the difference between the molecule of an element and the molecule of a compound? Give one example of each.
What is the difference between the molecules of elements and compounds?
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उत्तर
| Molecule of an element | Molecule of a compound | |
| 1. | It consists of two or more atoms of the same element chemically bonded together. | It consists of two or more atoms of different elements chemically bonded together. |
| 2. | Example: Bromine exists in nature as a diatomic element (Br2), wherein two bromine atoms are covalently bonded to give a molecule of bromine. | Example: A molecule of nitric acid, HNO3, comprises one atom of hydrogen, one atom of nitrogen and three atoms of oxygen chemically bonded together. |
संबंधित प्रश्न
Write down the name of a compound represented by the following formula:
CaCl2
Define: Atomic number
In what form does oxygen gas occur in nature ?
Molecular compounds are usually formed by the combination between :
An element X forms the following compounds with hydrogen, carbon and oxygen :
H2X, CX2, XO2, XO3
State the three valencies of element X which are illustrated by these compounds.
Correct the following statement:
A molecule of sulphur is monoatomic.
Give a reason why –
Helium is considered monoatomic, but hydrogen a diatomic molecule.
Give a reason why –
Ozone is considered triatomic, but phosphorus a tetratomic molecule.
Which of the following is a triatomic molecule?
Define: Atomicity.
