Class 9 Exam > Class 9 Questions > Molecular compounds are usually formed by co...
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Molecular compounds are usually formed by combination between
- a)Two different metals
- b)Two different non–metals
- c)Two gaseous elements
- d)A metal and a non-metal
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Molecular compounds are usually formed by combination betweena)Two di...
Understanding Molecular Compounds
Molecular compounds are formed primarily through the combination of non-metals. This process involves sharing electron pairs between atoms, leading to stable structures.
Key Characteristics of Molecular Compounds:
- Formation through Non-Metal Combination:
Molecular compounds typically result from the bonding of two different non-metals. This occurs via covalent bonding, where atoms share electrons to achieve full outer shells.
- Examples of Molecular Compounds:
Common examples include water (H2O), carbon dioxide (CO2), and methane (CH4). In each case, non-metal atoms bond together to form unique molecules.
- Properties of Molecular Compounds:
These compounds often have low melting and boiling points compared to ionic compounds. They may exist as gases, liquids, or solids at room temperature and tend to be poor conductors of electricity.
Why Not the Other Options?
- Two Different Metals:
Metals typically form metallic bonds, characterized by a sea of delocalized electrons rather than sharing electrons like in molecular compounds.
- Two Gaseous Elements:
While gases can be non-metals, not all gaseous elements form molecular compounds. For example, noble gases do not readily combine.
- A Metal and a Non-Metal:
This combination typically results in ionic compounds, where electrons are transferred from the metal to the non-metal, rather than shared.
Conclusion
In summary, option 'B' is correct because molecular compounds are formed by the combination of two different non-metals through covalent bonding. Understanding this concept is fundamental in the study of chemistry.
Molecular compounds are formed primarily through the combination of non-metals. This process involves sharing electron pairs between atoms, leading to stable structures.
Key Characteristics of Molecular Compounds:
- Formation through Non-Metal Combination:
Molecular compounds typically result from the bonding of two different non-metals. This occurs via covalent bonding, where atoms share electrons to achieve full outer shells.
- Examples of Molecular Compounds:
Common examples include water (H2O), carbon dioxide (CO2), and methane (CH4). In each case, non-metal atoms bond together to form unique molecules.
- Properties of Molecular Compounds:
These compounds often have low melting and boiling points compared to ionic compounds. They may exist as gases, liquids, or solids at room temperature and tend to be poor conductors of electricity.
Why Not the Other Options?
- Two Different Metals:
Metals typically form metallic bonds, characterized by a sea of delocalized electrons rather than sharing electrons like in molecular compounds.
- Two Gaseous Elements:
While gases can be non-metals, not all gaseous elements form molecular compounds. For example, noble gases do not readily combine.
- A Metal and a Non-Metal:
This combination typically results in ionic compounds, where electrons are transferred from the metal to the non-metal, rather than shared.
Conclusion
In summary, option 'B' is correct because molecular compounds are formed by the combination of two different non-metals through covalent bonding. Understanding this concept is fundamental in the study of chemistry.
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Community Answer
Molecular compounds are usually formed by combination betweena)Two di...
The molecular compounds are formed by the combination of two or more non-metals by sharing their electrons to achieve an octet. The non-metals shared their electrons via covalent bonds.
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