Here's the breakdown of protons, neutrons, and electrons in manganese:

* Protons: 25

* The number of protons defines an element. All manganese atoms have 25 protons.

* Neutrons: Varies, but the most common isotope (Mn-55) has 30 neutrons.

* Isotopes of an element have the same number of protons but different numbers of neutrons.

* Electrons: 25

* In a neutral atom, the number of electrons is equal to the number of protons.

Let me know if you'd like information about a specific isotope of manganese!