Question

| Atomic symbol | Atomic Number | Protons | Neutrons | Electrons | Atomic mass |
|---------------|---------------|---------|----------|-----------|-------------|
| __ | __ | 31 | 37 | __ | __ |

Answer 1

To fill in the missing information for the element with 31 protons and 37 neutrons, we can determine the atomic symbol, atomic number, and atomic mass.

1. **Atomic Number**: This is the same as the number of protons, which is 31.
2. **Element**: The element with atomic number 31 is Gallium (Ga).
3. **Electrons**: In a neutral atom, the number of electrons is equal to the number of protons, so it has 31 electrons.
4. **Atomic mass**: The atomic mass can be calculated as the sum of protons and neutrons.
- Atomic mass = Protons + Neutrons = 31 + 37 = 68.

Now, we can fill in the table:

| Atomic symbol | Atomic Number | Protons | Neutrons | Electrons | Atomic mass |
|---------------|---------------|---------|----------|-----------|-------------|
| Ga | 31 | 31 | 37 | 31 | 68 |