Coordination complexes with octahedral or sq. planar geometries may show cis-trans isomerism. By convention, chemists use significant, wedge-formed bonds to indicate a substituent Situated earlier mentioned the airplane from the ring (coming out on the webpage), a dashed line for bonds to atoms or groups Situated under the ring (heading https://mr-l288765.answerblogs.com/31139063/cgp48369-fundamentals-explained