Chemistry Form 4 Chapter 5

Chemistry Form 4 KSSM Chapter
5:Chemical Bond

Name:Raja Nur Rahimah bt Abdul Rauf
Class:4 Zamrud

Date:23 May 2020

Ionic Metal Dativ
bond lic e

Coval bond bond
ent
bond Chemical Hydro
Bond gen
bond

5.1: ionic bond

Ionic bond is formed by the transfer of electrons between metal atom and non-
metal atom.

Formation of ions (cation)
Metal atom donates valence electron to form a positively-charged ion(cation )

Formation of ions (anion)

Non-metal atom receives electron from a metal atom to form a negatively-
charged ion ( anion )

Formation of Ionic Bond

• formed when ions of opposite charges attract one another to form
an ionic bond. Fluorine atom will receive one electron from sodium atom to achieve a stable octet

electron arrangement.Fluorine ion,F- is formed.

Sodium atom
will donate one

electron to
achieve stable
octet eectron
arrangement.So
dium ion,Na+ is

formed

Na+ will attract with F- by strong electrostatic attraction force(ionic bonds). A compound of
sodium fluoride,NaF is formed.

5.2: Covalent bond

formed when non-metal atoms share their electrons to achieve a stable
duplet or octet electron arrangement.

Single
bond

Double Types Triple
bond of bond

covale
nt bond

Single Bond: Formed when two atoms share a pair of electrons.

Double Bond: Formed when two atoms share two pairs of electrons.

Triple bond: Formed when two atoms share three pairs of electrons.

5.3: hydrogen bond

Hydrogen bond are attraction force between hydrogen atom,H that has

bonded with an atom of high electronegativity such as nitrogen,oxygen or

fluorine with nitrogen,oxygen or fluorine in another molecule.

5.4: Dative bond

• Also known as coordinate bond
• Type of covalent bond where the electron pair that is shared cones from one

atom only.

5.5: metallic bond

• Formed when there is electrostatic force between the sea of electrons and the
positively-charged metal ions.

• Valence electrons of metal atoms can be donated easily and delocalised
although in the solid state.

• When electrons of metal atoms are delocalised in the sea of electrons,the
metal can conduct electricity.

• Electrons that move freely in the metal structure carry the charges from the
negative terminal to the positive terminal when electricity is supplied.