Question

multiple - choice question
how many protons and electrons does this copper atom have?

Explanation:

Step1: Recall atomic number concept

The atomic number of an element is equal to the number of protons. Copper (Cu) has an atomic number of 29, so it has 29 protons.

Step2: Recall neutral - atom electron - proton relationship

In a neutral atom, the number of electrons is equal to the number of protons. Since a neutral copper atom has 29 protons, it also has 29 electrons.

Answer:

29 protons, 29 electrons