Question

By how many atomic mass units do subsequent members of homologous series differ

Answer 1

A CH2 group

So

C + 2H

12+ 2*1

=14 amu

Answer 2

Answer:

14 amu

Explanation:

In homologous series the two consecutive members will differ by 14u or CH2 units

In case of alkanes (General Formula : CnH2n+2)

Example methane and ethane.

CH4 , C2H6, C3H8

Molecules masses are 16, 30, 44

Consecutive ones differ by 14.

And each differ by -CH2 units.