Periodic Table
Where is the 'mass' of the atom?
Nucleus
How many electrons fit on the third energy level?
8
What is a valance electron?
Figure out the number of electrons for each level for Ga
2) 8) 4)
What changes in an Isotope?
The number of neutrons
Name a metalloid.
Boron (B)
Silicon (Si)
Germanium (Ge)
Arsenic (As)
Antimony (Sb)
Tellurium (Te)
Astatine (At)