Exploration Task
Describe how the ionic bond is due to
electrostatic attraction between oppositely
charged ions.
-
Ionic bond is a type of chemical bond
formed through an electrostatic attraction between two oppositely charged ions
formed among the metal and non-metal substances
To become relative stable
- Metals tend to lose electrons to form a complete valence shell
- Non-metals tend to gain electrons to complete its valence shell and become negatively charged.
During the process of forming ionic bond
- Metals: lose electrons, become positive cation
- Non-metals: accepts electrons, become negative anion
Na: [Ne] 3s¹
Describe how a covalent bond is formed by the electrostatic
attraction between a shared pair of electrons and
the positively charged nuclei.
Covalent bond consists of the mutual sharing of one or more pairs of electrons between two atoms.
Simultaneously, the electrons are attracted to the two atomic nuclei.
A covalent bond is formed when the electronegativity of two atoms are too small. In other words, is where
two atoms have equal force of attraction. Therefore, as a result shared electrons that are located in the
space between two nuclei are called bonding electrons.
Molecules that have covalent linkage include inorganic substances..
- Hydrogen
- Nitrogen
- Chlorine
- Water
- Ammonia
Deduce the polar nature of a covalent bond
from electronegativity values