Topics of this game:
- what is the symbol of iron?
- Atomic mass of helium
- what type of element is Neon?
- what element is Ag
- in what group does lithium belong?
- what is the symbol of Tin?
- what is the symbol of potassium?
- How many electron shells does sodium have?
- what period is gold in
- what element has the symbol Ga?
- what type of element is Francium?
- the atomic mass of oxygen
- what does Cl stand for?
- what group is titanium
- What is he symbol of boron?
- what element has the symbol W
- What type of element is sulfur?
- what is the symbol of mercury?
- In what period is polonium
- how many electron shells does Vanadium have?
- Atomic number of Californium
