Metals, Nonmetals and Metalloids

Elements can be broadly classified as metals, nonmetals and metalloids.
 
Metallic elements
• are solid (except for mercury)
• are shiny
• can be hammered into sheets.
• can be drawn out as wires.
• characteristically conduct electricity.

aluminium
Nonmetallic elements
• may be solids, liquids or gases (if solid, they are brittle)
• characteristically do not conduct electricity.

sulfur
Metalloids
• look like metals
• behave chemically like nonmetals.

silicon

Metallic character increases from left to right and top to bottom in the periodic table. 

Thus the position of an element in the periodic table indicates whether it has metallic or non-metallic characteristics. 
1 2
  1H 2He
3 Li 4 Be   5 B 6 C 7 N 8 O 9 F 10 Ne
11 Na 12 Mg 13 Al 14 Si 15 P 16 S 17 Cl 18 Ar
19 K 20 Ca 21 Sc 22 Ti 23 V 24 Cr 25 Mn 26 Fe 27 Co 28 Ni 29 Cu 30 Zn 31 Ga 32 Ge 33 As 34 Se 35 Br 36 Kr
37 Rb 38 Sr 39 Y 40 Zr 41 Nb 42 Mo 43 Tc 44 Ru 45 Rh 46 Pd 47 Ag 48 Cd 49 In 50 Sn 51 Sb 52 Te 53 I 54 Xe
55 Cs 56 Ba 71 Lu 72 Hf 73 Ta 74 W 75 Re 76 Os 77 Ir 78 Pt 79 Au 80 Hg 81 Tl 82 Pb 83 Bi 84 Po 85 At

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