Category 1
The vertical groups on the periodic table.
What is a family?
Symbol of an element?
What is the name?
Calculate neutrons.
What is protons minus electrons.
What is 56?
A characteristic of an atom.
What is Halogen?
Number of groups in periodic table.
What is 18?
Radium is in what period?
What is period 7?
How many neutrons does Iron have?
What is 30?
Cerium is in what period?
What is period 6?
What are the elements of Tin?
What is 2, 8, 18, 14, 4?
What is the symbol for Gaddinium?
What is Gd?
What is 118?
How many elements on the periodic table?
What is the symbol for Niobium?
What is Nb?