Periodic Table of Elements
A Resource for Elementary, Middle School, and High School Students
| Group | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| Period | ||||||||||||||||||
| 1 | 1 H 1.008 |
2 He 4.003 |
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| 2 | 3 Li 6.94 |
4 Be 9.012 |
5 B 10.81 |
6 C 12.01 |
7 N 14.01 |
8 O 16.00 |
9 F 19.00 |
10 Ne 20.18 |
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| 3 | 11 Na 22.99 |
12 Mg 24.31 |
13 Al 26.98 |
14 Si 28.09 |
15 P 30.97 |
16 S 32.06 |
17 Cl 35.45 |
18 Ar 39.95 |
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| 4 | 19 K 39.10 |
20 Ca 40.08 |
21 Sc 44.96 |
22 Ti 47.88 |
23 V 50.94 |
24 Cr 52.00 |
25 Mn 54.94 |
26 Fe 55.85 |
27 Co 58.93 |
28 Ni 58.69 |
29 Cu 63.55 |
30 Zn 65.39 |
31 Ga 69.72 |
32 Ge 72.64 |
33 As 74.92 |
34 Se 78.96 |
35 Br 79.90 |
36 Kr 83.79 |
| 5 | 37 Rb 85.47 |
38 Sr 87.62 |
39 Y 88.91 |
40 Zr 91.22 |
41 Nb 92.91 |
42 Mo 95.96 |
43 Tc (98) |
44 Ru 101.1 |
45 Rh 102.9 |
46 Pd 106.4 |
47 Ag 107.9 |
48 Cd 112.4 |
49 In 114.8 |
50 Sn 118.7 |
51 Sb 121.8 |
52 Te 127.6 |
53 I 126.9 |
54 Xe 131.3 |
| 6 | 55 Cs 132.9 |
56 Ba 137.3 |
* | 72 Hf 178.5 |
73 Ta 180.9 |
74 W 183.9 |
75 Re 186.2 |
76 Os 190.2 |
77 Ir 192.2 |
78 Pt 195.1 |
79 Au 197.0 |
80 Hg 200.5 |
81 Tl 204.38 |
82 Pb 207.2 |
83 Bi 209.0 |
84 Po (209) |
85 At (210) |
86 Rn (222) |
| 7 | 87 Fr (223) |
88 Ra (226) |
** | 104 Rf (267) |
105 Db (268) |
106 Sg (269) |
107 Bh (270) |
108 Hs (277) |
109 Mt (278) |
110 Ds (281) |
111 Rg (282) |
112 Cn (285) |
113 Nh (286) |
114 Fl (289) |
115 Mc (289) |
116 Lv (293) |
117 Ts (294) |
118 Og (294) |
| Lanthanide Series* | 57 La 138.9 |
58 Ce 140.1 |
59 Pr 140.9 |
60 Nd 144.2 |
61 Pm (145) |
62 Sm 150.4 |
63 Eu 152.0 |
64 Gd 157.2 |
65 Tb 158.9 |
66 Dy 162.5 |
67 Ho 164.9 |
68 Er 167.3 |
69 Tm 168.9 |
70 Yb 173.0 |
71 Lu 175.0 |
|
| Actinide Series** | 89 Ac (227) |
90 Th 232 |
91 Pa 231 |
92 U 238 |
93 Np (237) |
94 Pu (244) |
95 Am (243) |
96 Cm (247) |
97 Bk (247) |
98 Cf (251) |
99 Es (252) |
100 Fm (257) |
101 Md (258) |
102 No (259) |
103 Lr (262) |
| Alkali metals | Lanthanides | ||
| Alkaline earth metals | Actinides | ||
| Transition metals | Nonmetals | ||
| Post-transition metals | Halogens | ||
| Metalloid | Noble gases |
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