Groups of the Table
What are the elements in group VII or 17 called and how many electrons are in the outer energy level?
What are halogen gases and 7 electrons?
I am the most unstable, radioactive element in the group of the most reactive metals.
Who is Francium?
What are the elements in group VIII or 18 called and why are they considered relatively unreactive?
What are noble gases and full outer energy levels?
I am a transition metal with 26 neutrons.
Who is Titanium?