Draw an important resonance form to show the delocalization of charge in the ion shown below. Interactive 3D display mode

r just means there's a number of carbon in teh chain. for example rcooh means that after x number of carbon, the chain ends with cooh.

explanation:

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.

answer///carbon;