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@edsciencelab ππ¨βπ¬
A Covalent Bond is a type of chemical bond formed when two atoms share one or more pairs of electrons to achieve a stable electronic configuration (usually the octet).
Definition
A covalent bond is a bond formed by the mutual sharing of electrons between two non-metal atoms.
Example
In Hydrogen molecule (Hβ), each hydrogen atom has 1 electron.
They share their electrons, forming one shared pair, which creates a single covalent bond.
Representation:
H β’ + β’ H β H : H or HβH
Types of Covalent Bonds
1. Single covalent bond β one pair of electrons shared
Example: Hydrogen molecule (Hβ)
2. Double covalent bond β two pairs of electrons shared
Example: Oxygen molecule (Oβ)
3. Triple covalent bond β three pairs of electrons shared
Example: Nitrogen molecule (Nβ)
Characteristics of Covalent Compounds
Usually formed between non-metals
Low melting and boiling points
Poor conductors of electricity
Often exist as gases, liquids, or soft solids
Example Compounds
Water (HβO)
Methane (CHβ)
Carbon dioxide (COβ)
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Definition
A covalent bond is a bond formed by the mutual sharing of electrons between two non-metal atoms.
Example
In Hydrogen molecule (Hβ), each hydrogen atom has 1 electron.
They share their electrons, forming one shared pair, which creates a single covalent bond.
Representation:
H β’ + β’ H β H : H or HβH
Types of Covalent Bonds
1. Single covalent bond β one pair of electrons shared
Example: Hydrogen molecule (Hβ)
2. Double covalent bond β two pairs of electrons shared
Example: Oxygen molecule (Oβ)
3. Triple covalent bond β three pairs of electrons shared
Example: Nitrogen molecule (Nβ)
Characteristics of Covalent Compounds
Usually formed between non-metals
Low melting and boiling points
Poor conductors of electricity
Often exist as gases, liquids, or soft solids
Example Compounds
Water (HβO)
Methane (CHβ)
Carbon dioxide (COβ)
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π¦ππππ‘ππ πππ
@edsciencelab ππ¨βπ¬
An Ionic Bond is a type of chemical bond formed through the complete transfer of one or more electrons from one atom to another, resulting in the formation of oppositely charged ions that are held together by electrostatic forces.
βDefinition;
βAn ionic bond is a bond formed by the electrostatic attraction between a positively charged metal ion (cation) and a negatively charged non-metal ion (anion).
βExample:
βIn a Sodium Chloride (NaCl) molecule, Sodium (Na) has 1 valence electron, while Chlorine (Cl) has 7.
βSodium transfers its 1 electron to Chlorine. This makes Sodium a positive ion (Na^+) and Chlorine a negative ion (Cl^-). Their opposite charges pull them together.
Representation:
Na β’ + β’ Cl : β [Na]^+ [:Cl:]^- or NaCl
βTypes of Ions involved
βCations β Atoms that lose electrons and become positively charged.
Example: Magnesium (Mg^{2+}), Potassium (K^+)
βAnions β Atoms that gain electrons and become negatively charged.
Example: Oxide (O^{2-}), Chloride (Cl^-)
βCharacteristics of Ionic Compounds
βUsually formed between a metal and a non-metal.
βHigh melting and boiling points due to strong electrostatic forces.
βConduct electricity when dissolved in water or melted (electrolytes).
βTypically exist as hard, brittle crystalline solids.
Example Compounds
βSodium Chloride (NaCl)
βMagnesium Oxide (MgO)
βCalcium Chloride (CaCl_2)
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βDefinition;
βAn ionic bond is a bond formed by the electrostatic attraction between a positively charged metal ion (cation) and a negatively charged non-metal ion (anion).
βExample:
βIn a Sodium Chloride (NaCl) molecule, Sodium (Na) has 1 valence electron, while Chlorine (Cl) has 7.
βSodium transfers its 1 electron to Chlorine. This makes Sodium a positive ion (Na^+) and Chlorine a negative ion (Cl^-). Their opposite charges pull them together.
Representation:
Na β’ + β’ Cl : β [Na]^+ [:Cl:]^- or NaCl
βTypes of Ions involved
βCations β Atoms that lose electrons and become positively charged.
Example: Magnesium (Mg^{2+}), Potassium (K^+)
βAnions β Atoms that gain electrons and become negatively charged.
Example: Oxide (O^{2-}), Chloride (Cl^-)
βCharacteristics of Ionic Compounds
βUsually formed between a metal and a non-metal.
βHigh melting and boiling points due to strong electrostatic forces.
βConduct electricity when dissolved in water or melted (electrolytes).
βTypically exist as hard, brittle crystalline solids.
Example Compounds
βSodium Chloride (NaCl)
βMagnesium Oxide (MgO)
βCalcium Chloride (CaCl_2)
@edsciencelab ππ¨βπ¬
Which gas supports combustion?
Anonymous Quiz
0%
Nitrogen
12%
Carbon dioxide
15%
Hydrogen
73%
Oxygen
Which acid is present in tomato ?
Anonymous Quiz
24%
Oxalic acid
24%
Acetic acid
31%
Citric acid
21%
Formic acid