Trends
Periods
Groups
Electron configuration
Atomic radii
Ionization energy
Electronegativity
Electron affinity
Metallic character
Alkali metals
1 Hydrogen H
3 Lithium Li
11 Sodium Na
19 Pota**ium K
37 Rubidium Rb
55 Caesium Cs
87 Francium Fr
Alkali earth metals
4 Beryllium Be
12 Magnesium Mg
20 Calcium Ca
38 Strontium Sr
56 Barium Ba
88 Radium Ra
Transition metal
21 Scandium Sc
22 Titanium Ti
23 Vanadium V
24 Chromium Cr
25 Manganese Mn
26 Iron Fe
27 Cobalt Co
28 Nickel Ni
29 Copper Cu
30 Zinc Zn
39 Yttrium Y
40 Zirconium Zr
41 Niobium Nb
42 Molybdenum Mo
43 Technetium Tc
44 Ruthenium Ru
45 Rhodium Rh
46 Palladium Pd
47 Silver Ag
48 Cadmium Cd
72 Hafnium Hf
73 Tantalum Ta
74 Tungsten W
75 Rhenium Re
76 Osmium Os
77 Iridium Ir
78 Platinum Pt
79 Gold Au
80 Mercury Hg
104 Rutherfordium Rf
105 Dubnium Db
106 Seaborgium Sg
107 Bohrium Bh
108 Ha**ium Hs
112 Copernicium Cn
Poor metals
13 Aluminium Al
31 Gallium Ga
49 Indium In
50 Tin Sn
81 Thallium Tl
82 Lead Pb
83 Bismuth Bi
84 Polonium Po
Metalloids
5 Boron B
14 Silicon Si
32 Germanium Ge
33 Arsenic As
51 Antimony Sb
52 Tellurium Te
85 Astatine At
Polyatomic nonmetal
6 Carbon C
15 Phosphorus P
16 Sulfur S
34 Selenium Se
Diatomic nonmetal
7 Nitrogen N
8 Oxygen O
9 Fluorine F
17 Chlorine Cl
35 Bromine Br
53 Iodine I
Noble gas
2 Helium He
10 Neon Ne
18 Argon Ar
36 Krypton Kr
54 Xenon Xe
86 Radon Rn
Lanthanides
57 Lanthanum La
58 Cerium Ce
59 Praseodymium Pr
60 Neodymium Nd
61 Promethium Pm
62 Samarium Sm
63 Europium Eu
64 Gadolinium Gd
65 Terbium Tb
66 Dysprosium Dy
67 Holmium Ho
68 Erbium Er
69 Thulium Tm
70 Ytterbium Yb
71 Lutetium Lu
Actinides
89 Actinium Ac
90 Thorium Th
91 Protactinium Pa
92 Uranium U
93 Neptunium Np
94 Plutonium Pu
95 Americium Am
96 Curium Cm
97 Berkelium Bk
98 Californium Cf
99 Einsteinium Es
100 Fermium Fm
101 Mendelevium Md
102 Nobelium No
103 Lawrencium Lr
Unknown
109 Meitnerium Mt
110 Darmstadtium Ds
111 Roentgenium Rg
113 Ununtrium Uut
114 Flerovium Uuq
115 Ununpentium Uup
116 Livermorium Lv
117 Ununseptium Uus
118 Ununoctium Uuo