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Answered on 13 Apr Learn NCERT Solutions
Sadika
Answered on 13 Apr Learn NCERT Solutions
Sadika
Some elements exist in molecular form because their atoms prefer to share electrons to achieve a stable electron configuration through covalent bonding. Other elements exist in atomic form because they tend to form metallic bonds or ionic bonds, or because they are noble gases with stable electron configurations.
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Identification of Metal A and Amphoteric Oxide B:
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Answered on 13 Apr Learn Metals and Non Metals
Sadika
Identification of Non-metal A and Its Oxides B and C:
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Answered on 13 Apr Learn Metals and Non Metals
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Answered on 13 Apr Learn Acids, Bases and Salts
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Rainwater conducts electricity because it contains dissolved ions and gases from the atmosphere, such as carbon dioxide (CO2), oxygen (O2), and nitrogen oxides (NOx), which act as electrolytes and facilitate the flow of electric current. Distilled water, on the other hand, does not conduct electricity because it lacks dissolved ions and gases, making it a poor conductor of electricity.
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Answered on 13 Apr Learn Acids, Bases and Salts
Sadika
Sour substances contain acidic compounds that can react with copper and brass to form toxic compounds such as copper acetate or copper sulfate. These compounds can leach into the food or drink stored in the vessels, posing health risks. Therefore, it is not advisable to keep sour substances in brass and copper vessels.
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Answered on 13 Apr Learn Acids, Bases and Salts
Sadika
Answered on 13 Apr Learn Periodic classification of elements
Sadika
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Answered on 13 Apr Learn Periodic classification of elements
Sadika
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