HSC CHEMISTRY 2015​.

Coordinate Covalent Bonding

 

Covalent Bond

The sharing of electrons between atoms to achieve a Nobel gas configuration (NGC). This occurs between non-metals as they attempt to gain electrons for NGC.

 

Single: atoms sharing one electron each

 

 

Double: atoms sharing two electrons each

 

 

Triple: atoms sharing three electron each

 

 

Oxygen gas, O2: An oxygen atom has 6 electrons (4 paired, 2 unpaired). When it bonds with another

oxygen atom the unpaired electrons pair up with that of the other atom creating a double covalent

bond, achieving NGC.

 

Coordinate Covalent Bond (CCB):

A covalent bond in which one atom donates an electron pair to be shared with another atom. Despite its different formation, once formed it is the same as a covalent bond.

Ozone, O3: Ozone consists of 2 atoms double covalently bonded and the 3rd attached by a CCB. The unpaired electrons of the free radical pair together then an atom from O2 donates a pair to share with the free radical.

 

 

 

 

 

 

 

Ammonium, NH4^+:

 

 

 

 

 

 

 

Carbon Monoxide, CO:

 

 

 

 

 

 

 

Hydronium, H3O+: