Hello!
Answer:
If we are talking about an electrically neutral atom, it has 23 electrons.
Why?
An electrically neutral atom has the same number of protons (positive charge) and electrons (negative charge).
When an atom has more protons than electrons, it's called positive ion (cation), it's an ion with a positive charge.
When an atom has more electrons than protons, it's called negative ion (anion), it's an ion with a negative charge.