Question

what information would allow you to determine whether two atoms are of the same element ? the charge on each atom the number of neutrons each has the number of protons in their nuclei the location of the electrons in their electron clouds

Explanation:

To determine if two atoms are of the same element, we use the concept that the atomic number (number of protons in the nucleus) defines an element. Atoms of the same element have the same number of protons. The charge (depends on electrons gained/lost), number of neutrons (isotopes exist), and electron location (varies with ionization/ bonding) don't define the element. So the number of protons in their nuclei is the key.

Answer:

The number of protons in their nuclei