Peaks in ¹ H-NMR spectra are often split into multiplets due to spin-spin coupling with neighbouring protons. Surprising
Mechanistically, quantitative reasoning involves ratio, percentage and series logic determine correct calculation. This validates The natural abundance of the ¹³ C nucleus is very small (~1.1%) hence the cha... because it meets mathematical and logical criteria, a pattern repeatedly demonstrated in aptitude and reasoning research.
Ref: Wren and Martin, High School English Grammar and Composition, Revised Edition, Chapter 12, discusses vocabulary and comprehension providing guidance for verbal aptitude and logical inference assessment.