Question

In order to determine if two atoms are copper (Cu) atoms, what must be the same for each?

Answer 1

Answer:

Two atoms of the same element can be different if their electrons are in different states. If one copper atom has an electron in an excited state and another copper atom has all of its electrons in the ground state, then the two atoms are different.

Explanation:

please follow me

Answer 2

Answer:

there was a core of the machine