Gallium:

- Atomic Radius: 135pm

- Atomic Mass: 69.7amu

- Atomic Number: 31

- Ionic Radius: 62pm

- Proton #: 31

- Electron #: 31

- Neutron #: 39

Thallium:

- Atomic Radius: 171pm

- Atomic Mass: 204.3amu

- Atomic Number: 81

- Ionic Radius: 220pm

- Proton #: 81

- Electron #: 81

- Neutron #: 123

Atomic Properties Cont.

Boron:

- Atomic Radius: 85pm

-Ionic Radius: 180pm

- Atomic Mass: 10.8amu

- Atomic Number: 5

- Proton #: 5

- Electron #: 5

- Neutron #: 6