Answer:
Groups B and D
Explanation:
The attached picture is that of the periodic table of elements. There are four colours showing different classes of the elements. The colours are coded A,B,C and D
A are metals (alkali metals, alkali earth metals, transition metals, actinides and lanthanides)
B and D are non-metals (halogens and gases including noble gases)
C are metalloids or semi-metals (they have some properties similar to metals and non-metals)
B and D is the answer because elements found in those colours have properties different from that of metals
