What Results in sp, sp2 and sp3 Hybridization?

Hybridisation is the property of elements “responsible for creating new structures, bonds, orbitals.” Two or more orbitals of the same atom combine with each other when they have identical energies. However, they can combine even if they are not fully filled orbitals and just have equal energies. As an outcome, entire new orbitals are obtained which have equal energies. Furthermore, there are some types of hybridisation. Each type of hybridisation is the outcome of different instances. Let us examine what results in sp, sp2 and sp3 hybridisation. 

About sp, sp2 and sp3 Hybridisation

Hybridisation involves covering atomic orbitals to shape new orbitals with new qualities. Moreover, hybridisation is distributed in many types – sp, sp2, sp3,etc. 

Sp hybridisation denotes the mixing of 1 s and 1 p orbital to form sp hybridised orbital. This process is called sp hybridisation. A slight increase in s and p orbital numbers leads to new hybrid orbitals. 

For example, when 1 s and 2 p are superimposed, they form the sp2 hybrid orbital, and the process is known as sp2 hybridisation. On the other hand, when 1 s is superimposed with 3 p atomic orbitals, they form a new hybrid orbital, named the sp3 hybridised orbital. 

Overview of sp Hybridisation

In chemistry, hybridisation is described as the procedure of blending two atomic orbitals to create new hybridised orbitals. When a new atom establishes bonds, it needs electrons, which it takes from different orbitals like s and p. 

After releasing electrons from s and p, there is an imbalance in the electron’s energy levels. To compensate for this imbalance, the s and p blend with each other to form a new hybridised orbital called the sp orbital. This process is called sp hybridisation. 

Further, the process reaches the next level, where sp2 and sp3 hybridised orbitals are formed.

Overview of sp2 Hybridisation

This sort of hybridisation is a blend of one s and two p nuclear orbitals. After proper hybridisation, they create three new orbital structures known as trigonal hybridised orbitals. These three hybridised orbitals are equal in energies. 

The formed hybridised orbitals contain higher energy than s orbital and less energy than p orbitals. The new hybridised orbital takes the form of a trigonal structure bound with a bond angle of 120 degrees.

Overview of sp3 Hybridisation

Sp3 hybridisation is formed when one 2s orbital blends with three 2p orbitals to form hybridised orbital structure. The formed structure is a tetrahedron, which means 4 hybrid orbitals with the same features. 

These sp3 hybrid orbitals have the same level of energy and are delocalised. In sp3 hybridisation, there is 25% of s, and the remaining 75% consists of p orbital characters. 

The bond angle in the sp3 hybrid orbital is around 109.5 degrees and creates a tetrahedron. 

Difference Between sp, sp2, and sp3 Hybridisation

Conclusion

This article discusses what results in sp, sp2, and sp3 hybridisation. After discussing, we can now conclude that each type of hybridisation takes place due to different factors, primarily the proportion of the combining orbitals. 

As we discussed sp, sp2 and sp3 hybridisation only, there were two major orbitals ‘s’ and ‘p’. These orbitals decide the shape and some characteristics of the molecule. 

Whenever one ‘s’ and one ‘p’ orbitals combine, they result in sp hybridisation. Further, when one ‘s’ and two ‘p’ orbitals combine, sp2 hybridisation is the outcome. Lastly, when one ‘s’ and three ‘p’ orbitals combine, the result will be sp3 hybridisation. Below are some sp, sp2, and sp3 hybridisation questions to clarify your doubts.