Why do the atoms in a piece of copper metal have no net charge?

-The charges of the positive and negative copper ions cancel each other out.

-The number of electrons surrounding each copper nucleus doesn't change.

-Copper atoms can't lose electrons without a substance present to gain electrons.

-When a copper atom loses electrons, it also loses a corresponding number of protons.

-The copper atoms exchange neutrons instead of electrons.

(more than 1 answer allowed)

Answer;

-The charges of the positive and negative copper ions cancel each other out.

Explanation;

-A normal atom has a neutral charge with equal numbers of positive and negative particles. That means an atom with a neutral charge is one where the number of electrons is equal to the atomic number.

-Atoms are electrically neutral because they have equal numbers of protons (positively charged) and electrons (negatively charged). If an atom gains or loses one or more electrons, it becomes an ion. If it gains one or more electrons, it now carries a net negative charge, and is thus anionic.

Answer: The correct answer is the charges of the positive and negative copper ions cancel each other out.

Explanation:

A copper metal having no net charge means that it is a neutral atom.

A neutral atom means that total number of protons is equal to the total number of electrons.

Protons carry positive charge and electrons carry negative charge of equal magnitude.

Hence, no net charge means that the charged of positive copper ions cancel the charges of negative copper ions