Final answer:
Axid (H2) has fewer Steric Effects (SE) because it is a small molecule that does not have bulky groups attached to its carbon atoms.
Step-by-step explanation:
The reason there are fewer SE (Steric Effects) with axid (H2) is because of the way the molecule is structured. Axid, also known as ranitidine, is a histamine-2 receptor antagonist used to reduce stomach acid production. It is a relatively small molecule that does not have bulky groups attached to the carbon atoms. As a result, there is less crowding or hindrance around the atoms, and the steric effects are minimized.