CBSE Class 10 Answered
Covalent Bonds |
Ionic Bonds |
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Polarity: |
Low |
High |
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Formation: |
A covalent bond is formed between two non-metals that have similar electronegativities. Neither atom is "strong" enough to attract electrons from the other. For stabilization, they share their electrons from outer molecular orbit with others |
An ionic bond is formed between a metal and a non-metal. Non-metals(-ve ion) are "stronger" than the metal(+ve ion) and can get electrons very easily from the metal. These two opposite ions attract each other and form the ionic bond. |
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Shape: |
Definite shape |
No definite shape |
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Melting point: |
low |
High |
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What is it?: |
Covalent bonding is a form of chemical bonding between two non metallic atoms which is characterized by the sharing of pairs of electrons between atoms and other covalent bonds. |
Ionic bond, also known as electrovalent bond is a type of bond formed from the electrostatic attraction between oppositely charged ions in a chemical compound. These kinds of bonds occur mainly between a metallic and a non metallic atom. |
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Boiling point: |
Low |
High |
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Examples: |
Methane (CH4), Hydro Chloric acid (HCl) |
Sodium chloride (NaCl), Sulphuric Acid (H2SO4 ) |
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Occurs between: |
Two non-metals |
One metal and one non-metal |
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State at room temperature: |
Liquid or gaseous |
Solid |