Final answer:
The strong nuclear force, which holds together the nucleons in the nucleus, is not affected by the removal of an electron to form a lithium ion; therefore, it is equal in both a lithium atom and a lithium ion.
Step-by-step explanation:
When comparing the total strong nuclear force in a lithium atom to that in a lithium ion (Li+), we must understand that the strong nuclear force is the force that holds the protons and neutrons (collectively known as nucleons) together in the nucleus.
The removal of an electron to form a lithium ion does not affect the number of protons or neutrons in the nucleus. Therefore, the total strong nuclear force remains constant regardless of the atom being ionized. The correct answer is c. The force is equal in both.