The different types of chromosomes are

Metacentric

It is a chromosome with the centromere near the middle and the two chromatics are of equal lengths.

Sub-metacentric

Here the centromere is situated slightly closer to one end than the other. Thus one chromatic is slightly longer than the other.

Acrocentric

Here the chromosome is situated near one end of the chromosome. Thus one chromatic is very long while the other is very small.

Telocentric

Here the centromere is situated at the tip of the chromosome.