Question

| Atomic symbol | Atomic Number | Protons | Neutrons | Electrons | Atomic mass |
|---------------|---------------|---------|----------|-----------|-------------|
| Yb | __ | __ | __ | __ | 172 |

Answer 1

The element with the atomic symbol "Yb" is Ytterbium. It has the following properties:

- **Atomic Number**: 70
- **Protons**: 70
- **Neutrons**: Approximately 102 (atomic mass - atomic number = 172 - 70 = 102)
- **Electrons**: 70 (in a neutral atom)

So, the completed table would look like this:

| Atomic symbol | Atomic Number | Protons | Neutrons | Electrons | Atomic mass |
|---------------|---------------|---------|----------|-----------|-------------|
| Yb | 70 | 70 | 102 | 70 | 172 |