Question

Identify 1°, 2° and 3° carbon atoms in given alkane: 

CH₂ - CH₂ - C(CH₃)₂ - CH₂ - CH(CH₃)₂ 

Write the number of total hydrogen atoms attached to each carbon atom. 

Answer 1

If carbon atom is attached with one hydrogen atoms then this carbon atom is known as 1° carbon atom. 

If carbon atom is attached with two hydrogen atom then this carbon atom is known as 2° carbon atom. If carbon atom is attached with three hydrogen ato then it is known as 3° carbon atom.

Number of 1° Hydrogen atom = 5 

Number of 2° hydrogen atom = 4 

Number of 3° hydrogen atom = 1