Question

what is the role of neutrons in the nucleus?
form chemical bonds
buffer between protons
carry negative charge
determine the element

Explanation:

Protons in the nucleus have positive charges and repel each other. Neutrons, which are neutral, act as a buffer between protons, helping to hold the nucleus together through the strong - nuclear force. Chemical bonds are formed by electrons, neutrons are neutral so they don't carry a negative charge, and the number of protons determines the element.

Answer:

Buffer between protons