covalent bond ionic bond - St. Joseph Hill Academy

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COVALENT BOND
IONIC BOND
1.A covalent bond is formed between two non-metals
An ionic bond is formed between a
that have similar electronegativities, neither atom
metal and a non-metal. Non metals
“strong” enough to attract eletrons from the other.
(-ve ion) are “stronger” than the
For stabilization, they share electrons from outer
metal (+ve ion) and can get electrons
molecular orbits with others.
very easily from the metals. These 2
form an ionic bond.
2. Have a definite shape
no definite shape
3. covalent bonding is a form of chemical bonding
Ionic bond, also known as electro-
Between tow non-metallic atoms, which is
valent bond is a bond formed from
Characterized by the sharing of electrons between
electrostatic attraction between
atoms and other covalent bonds.
oppositely charged ions in a chemical
compound. These kinds of bonds
occur mainly between a metallic and
non metallic atom.
4. low melting point
high melting point
5.examples: Methane (CH4), Hydro Chloric
(NaCl) Sodium chloride
Acid (HCL)
Sulphoric Acid H2SO4
6. boiling point low
boiling point high
7. state at room temperature – liquid or gas
State at room temperature - solid
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