# Question #138bc

##### 1 Answer

**Number of Protons**:

**Number of Electrons**:

**Number of Neutrons**:

#### Explanation:

Though Phosphorous has 23 isotopes, only one of it is stable. The only stable isotope of phosphorous is **Phosphorous-31**. Almost all of the naturally occurring phosphorous is in this form.

**Phosphorous-31** has an atomic number of **phosphorous-31** atom has 15 protons, 15 electrons and

To calculate the total number of electrons, protons and neutrons in a certain mass of phosphorous, first find the total number of phosphorous-31 atoms.

The number of phosporous atoms in

**Number of Protons**:

**Number of Electrons**:

**Number of Neutrons**: