sobrang ganda kaya panoodin nyo na h For the element Phosphorus (P), the details are as follows:

- Mass number: 31
- Number of Protons: 15
- Number of Neutrons: 16
- Number of Electrons: 15
- Atomic Number: 15

These numbers define the characteristics of Phosphorus and its place in the periodic table. Phosphorus is an essential element for life and is involved in various biological processes. It is also used in various applications, such as fertilizers and flame retardants.

Source: Periodic Table, Material Properties