How many elements of the following are electropositive element(s)?
Sodium, calcium, germanium and polonium and chlorine.

Explanation

To determine how many elements from the list (Sodium, Calcium, Germanium, Polonium, and Chlorine) are electropositive, we need to analyze each element based on its tendency to lose electrons.

### Step-by-Step Solution:

1. **Identify Electropositive Elements**:
Electropositive elements are those that tend to lose electrons and form positive ions. They are typically metals.

2. **Analyze Sodium (Na)**:
- Atomic Number: 11
- Electron Configuration: 2, 8, 1
- Sodium has one electron in its outermost shell. To achieve a stable electron configuration (like Neon), it will lose this one electron.
- **Conclusion**: Sodium is an electropositive element.

3. **Analyze Calcium (Ca)**:
- Atomic Number: 20
- Electron Configuration: 2, 8, 8, 2
- Calcium has two electrons in its outermost shell. To achieve a stable configuration (like Argon), it will lose these two electrons.
- **Conclusion**: Calcium is also an electropositive element.

4. **Analyze Chlorine (Cl)**:
- Atomic Number: 17
- Electron Configuration: 2, 8, 7
- Chlorine has seven electrons in its outermost shell. It tends to gain one electron to achieve a stable configuration (like Argon).
- **Conclusion**: Chlorine is not an electropositive element; it is electronegative.

5. **Analyze Germanium (Ge)**:
- Atomic Number: 32
- Electron Configuration: 2, 8, 18, 4
- Germanium can either lose or gain electrons depending on the situation. It can exhibit both electropositive and electronegative characteristics.
- **Conclusion**: Germanium is not strictly electropositive.

6. **Analyze Polonium (Po)**:
- Atomic Number: 84
- Electron Configuration: [Xe] 4f14 5d10 6s2 6p4
- Polonium can also exhibit both electropositive and electronegative characteristics, but it is more often considered as a metalloid.
- **Conclusion**: Polonium is not strictly electropositive.

### Final Count of Electropositive Elements:
From the analysis, the electropositive elements identified are Sodium and Calcium. Therefore, the total number of electropositive elements in the list is **2**.

### Answer:
**2**