The First 20 Elements Quiz

Which of the following elements are non-metals?

Potassium is the 13th element in the periodic table and it's chemical symbol is S.

[blank_start]Nitrogen[blank_end] is the 7th element Aluminium's symbol is [blank_start]Al[blank_end] Calcium is [blank_start]2[blank_end]0th [blank_start]Hydrogen[blank_end] is not considered a metal or a non-metal The first five elements are Hydrogen, [blank_start]Helium[blank_end], [blank_start]Lithium[blank_end], Beryllium and [blank_start]Boron[blank_end] The 15th element to the 20th elements are P, [blank_start]S, Cl[blank_end], [blank_start]Ar[blank_end], K and Ca