Protons in a Molecule Depending on their chemical environment,protons in a molecule are shielded by different amounts. more shielded. absorb at a higher field H less shielded, absorbs at a lower field Copyright 2005 Pearson Prentice Hall.Inc. 三> Chapter 13 9Chapter 13 9 Protons in a Molecule Depending on their chemical environment, protons in a molecule are shielded by different amounts. =>