A dependible common measurement
The correct answer is D because they are all in the same group and all elements in the same groups as each other are always very similar.
SI derived units are units of measurement derived from the seven base units specified by the International System of Units (SI). They are either dimensionless or can be expressed as a product of one or more of the base units, possibly scaled by an appropriate power of exponentiation.
Here is the correct answer of the given question above. Ferrocene has a higher melting point that acetylferrocene because it takes more energy to overcome the intermolecular forces between atoms. <span>Acetylferrocene melts at 80 degrees and Ferrocene melts at 170. Hope this answer helps.</span>