Ptable.com Periodic Table
PERIODIC TABLE OF ELEMENTS
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Noble gases
Other nonmetals Metalloids
Post-transition metals Transition metals
Alkaline earth metals Alkali metals
1 1 Atomic #
1 H Symbol
Hydrogen Name
1.008 N Weight
3
4 2
1
2 2
2 Li Be
Lithium Beryllium
6.94 K 9.0122 E
C Solid Hg Liquid H Gas
Metals
Lanthanoids (Lanthanides)
L
Actinoids
Nonmetals
5
B
Boron 10.81
2
2K L
M
He
N O P
Q
Helium
Pnictogens Chalcogens Halogens 4.0026 G
6 2
3
7 2
4
8 2
5
9 2
6
10 2
7
2K 8L
M
C
N
OF
Ne
N O P
Q
Carbon Nitrogen Oxygen Fluorine Neon
M 12.011 N 14.007 N 15.999 N 18.998 N 20.180 G
11
12 2
8 1
2 8 2
3 Na Mg
Sodium Magnesium
Rf Unknown
(Actinides)
13
14 2
8 3
15 2
8 4
16 2
8 5
17 2
8 6
18 2
8 7
2K 8L 8M
K
E
A
T
P
M
N
G Al Si P
S
Cl
Ar
N O P
Q
Aluminium Silicon Phosphorus Sulfur Chlorine Argon
22.990 K 24.305 E
26.982 P 28.085 M 30.974 N 32.06 N 35.45 N 39.948 G
19
20 2
8 8
21 2
8 8
22 2
8 9
23 2
8 10
24 2
8 11
25 2
8 13
26 2
8 13
4 K 1 Ca 2 Sc 2 Ti V 2 2 Cr 1 Mn 2 Fe
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron
27 2
8 14
2 Co
28 2
8 15
2 Ni
29 2
8 16
2 Cu
30 2
8 18
1 Zn
Cobalt Nickel Copper Zinc
31 2
8 18
32 2
8 18
33 2
8 18
34 2
8 18
35 2
8 18
36 2
8 18
2K 8L 18 M
Ga Ge As Se Br Kr 2
3
4
5
6
7
8N
O
P
Q
Gallium Germanium Arsenic Selenium Bromine Krypton
39.098 K 40.078 E 44.956 T 47.867 T 50.942 T 51.996 T 54.938 T 55.845 T 58.933 T 58.693 T 63.546 T 65.38 T 69.723 P 72.630 M 74.922 M 78.971 N 79.904 N 83.798 G
37
38 2
8 18
39 2
8 18
40 2
8 18
41 2
8 18
42 2
8 18
43 2
8 18
44 2
8 18
45 2
8 18
46 2
8 18
47 2
8 18
48 2
8 18
49 2
8 18
50 2
8 18
5 Rb
Sr 8
1
Y 8
2
Zr Nb Mo Tc Ru Rh Pd Ag Cd In 9
10
12
13
13
15
16
18
18
18
2
2
1
1
2
1
1
1
2
Sn 18 3
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin
51 2
8 18
52 2
8 18
53 2
8 18
54 2
8 18
2K 8L 18 M
Sb Te 18
18
4
5
I18 6
Xe 18 7
18 N 8O P
Q
Antimony Tellurium Iodine Xenon
85.468 K 87.62 E 88.906 T 91.224 T 92.906 T 95.95 T (98) T 101.07 T 102.91 T 106.42 T 107.87 T 112.41 T 114.82 P 118.71 P 121.76 M 127.60 M 126.90 N 131.29 G
55
56 2
8 18
2 8 18
6 Cs Ba 18
18
8
8
1
2
Caesium Barium
57?71
72
Hf
73 2
8 18
Ta 32
10 2
74 2
8 18
W 32
11 2
75 2
8 18
Re 32
12 2
76 2
8 18
Os 32
13 2
77 2
8 18
Ir 32
14 2
78 2
8 18
Pt 32
15 2
79 2
8 18
Au 32
17 1
Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold
80 2
8 18
Hg 32
18 1
81 2
8 18
Tl 32
18 2
82 2
8 18
Pb 32
18 3
Mercury Thallium Lead
83 2
8 18
84 2
8 18
85 2
8 18
86 2
8 18
2K 8L 18 M
Bi 32
18 4
Po 32
18 5
At 32
18 6
Rn 32
18 7
32 N 18 O
8P
Q
Bismuth Polonium Astatine Radon
132.91 K 137.33 E
178.49 T 180.95 T 183.84 T 186.21 T 190.23 T 192.22 T 195.08 T 196.97 T 200.59 T 204.38 P 207.2 P 208.98 P (209) P (210) M (222) G
87
88 2
8 18
2 8 18
104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 2
2
2
2
2
2
2
2
2
2
2
2
2
2
2K
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8L
18
18
18
18
18
18
18
18
18
18
18
18
18
18
18 M
7 Fr
Ra Rf 32
32
18 8 1
18 8 2
89?103
Db 32
32 10
2
Sg 32
32 11
2
Bh 32
32 12
2
Hs 32
32 13
2
Mt 32
32
14 2
Ds 32
32 15
2
Rg 32
32 17
1
Cn 32
32 18
1
Nh 32
32 18
2
Fl 32
32 18
3
Mc 32
32 18
4
Lv 32
32 18
5
Ts 32
32 18
6
Og 32
32 18
7
32 N 32 O 18 P
8Q
Francium Radium
Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson
(223) K (226) E
(267) T (268) T (269) T (270) T (277) T (278) (281) (282) (285) T (286) (289) P (290) (293) (294) (294)
For elements with no stable isotopes, the mass number of the isotope with the longest half-life is in parentheses.
Ptable .com
57
58 2
8 18
59 2
8 18
60 2
8 18
61 2
8 18
62 2
8 18
63 2
8 18
64 2
8 18
65 2
8 18
66 2
8 18
67 2
8 18
68 2
8 18
69 2
8 18
70 2
8 18
71 2
8 18
2 8 18
6 La Ce Pr 18
19
9
9
2
2
Nd Pm Sm Eu Gd Tb Dy Ho Er 21
22
23
24
25
25
27
28
29
8
8
8
8
8
9
8
8
8
2
2
2
2
2
2
2
2
2
Tm Yb 30
31
8
8
2
2
Lu 32 8 2
32 9 2
Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium
138.91 L 140.12 L 140.91 L 144.24 L (145) L 150.36 L 151.96 L 157.25 L 158.93 L 162.50 L 164.93 L 167.26 L 168.93 L 173.05 L 174.97 L
89
90 2
8 18
91 2
8 18
92 2
8 18
93 2
8 18
94 2
8 18
95 2
8 18
96 2
8 18
97 2
8 18
98 2
8 18
99 2
8 18
100 101 102 103 2
2
2
2
2
8
8
8
8
8
18
18
18
18
18
7 Ac
Th 32
18 9 2
Pa 32
18 10
2
U 32
20 9 2
Np 32
21 9
Pu 32
22 9
Am Cm Bk 32
32
32
24
25
25
8
8
9
Cf 32
27 8
Es 32
28 8
Fm Md No Lr 32
32
32
32
29
30
31
32
8
8
8
8
32 32
8
2
2
2
2
2
2
2
2
2
2
2
3
Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium
(227) A 232.04 A 231.04 A 238.03 A (237) A (244) A (243) A (247) A (247) A (251) A (252) A (257) A (258) A (259) A (266) A
Design Copyright ? 2017 Michael Dayah (michael@). For a fully interactive version with orbitals, isotopes, compounds, and free printouts, visit
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