Post by Admin on Nov 24, 2016 10:03:56 GMT
Bonding & Octet Rule
Atoms combine to form compounds.
The octet rule states that atoms bond together so that each atom attains a stable outer shell of 8 electrons.
Ionic Bonds
Ionic bonds are formed when electrons are transferred between atoms so that each atom has 8 electrons in its outer shell.
For example, NaCl is formed when Sodium (2, 8, 1) donates its outer electron to Chlorine (2, 8, 7). This way, sodium and chlorine both have 8 electrons in their outermost shell.
An ion is a positively or negatively charged atom.
An atom becomes positively charged when it loses an electron.
An atom becomes negatively charged when it gains an electron.
Covalent Bonds
A covalent bond is formed when atoms share electrons.
A single covalent bond is formed when atoms share only one pair of electrons, e.g. Hydrogen(H2)
A double covalent bond is formed when atoms share two pairs of electrons, e.g. Oxygen(O2)
Atoms combine to form compounds.
The octet rule states that atoms bond together so that each atom attains a stable outer shell of 8 electrons.
Ionic Bonds
Ionic bonds are formed when electrons are transferred between atoms so that each atom has 8 electrons in its outer shell.
For example, NaCl is formed when Sodium (2, 8, 1) donates its outer electron to Chlorine (2, 8, 7). This way, sodium and chlorine both have 8 electrons in their outermost shell.
An ion is a positively or negatively charged atom.
An atom becomes positively charged when it loses an electron.
An atom becomes negatively charged when it gains an electron.
Covalent Bonds
A covalent bond is formed when atoms share electrons.
A single covalent bond is formed when atoms share only one pair of electrons, e.g. Hydrogen(H2)
A double covalent bond is formed when atoms share two pairs of electrons, e.g. Oxygen(O2)