A Resource for Elementary, Middle School, and High School Students
Period | Group** |
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1 IA 1A |
18 VIIIA 8A |
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1 | 1 H 1.008 |
2 IIA 2A |
13 IIIA 3A |
14 IVA 4A |
15 VA 5A |
16 VIA 6A |
17 VIIA 7A |
2 He 4.003 |
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2 | 3 Li 6.941 |
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 |
3 IIIB 3B |
4 IVB 4B |
5 VB 5B |
6 VIB 6B |
7 |
8 | 9 | 10 | 11 IB 1B |
12 IIB 2B |
13 Al 26.98 |
14 Si 28.09 |
15 P 30.97 |
16 S 32.07 |
17 Cl 35.45 |
18 Ar 39.95 |
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VIII ------- ------- 8 ------- |
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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 |
25 |
26 Fe 55.85 |
27 Co 58.47 |
28 Ni 58.69 |
29 |
30 Zn 65.39 |
31 Ga 69.72 |
32 Ge 72.59 |
33 As 74.92 |
34 Se 78.96 |
35 Br 79.90 |
36 Kr 83.80 |
5 | 37 Rb 85.47 |
38 Sr 87.62 |
39 Y 88.91 |
40 Zr 91.22 |
41 Nb 92.91 |
42 Mo 95.94 |
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 |
57 La* 138.9 |
72 Hf 178.5 |
73 Ta 180.9 |
74 W 183.9 |
75 Re 186.2 |
76 Os 190.2 |
77 Ir 190.2 |
78 Pt 195.1 |
79 Au 197.0 |
80 Hg 200.5 |
81 Tl 204.4 |
82 Pb 207.2 |
83 Bi 209.0 |
84 Po (210) |
85 At (210) |
86 Rn (222) |
7 | 87 Fr (223) |
88 Ra (226) |
89 Ac~ (227) |
104 Rf (257) |
105 Db (260) |
106 Sg (263) |
107 Bh (262) |
108 Hs (265) |
109 Mt (266) |
110 --- () |
111 --- () |
112 --- () |
114 --- () |
116 --- () |
118 --- () |
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Lanthanide Series* | 58 Ce 140.1 |
59 Pr 140.9 |
60 Nd 144.2 |
61 Pm (147) |
62 Sm 150.4 |
63 Eu 152.0 |
64 Gd 157.3 |
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 |
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Actinide Series~ | 90 Th 232.0 |
91 Pa (231) |
92 U (238) |
93 Np (237) |
94 Pu (242) |
95 Am (243) |
96 Cm (247) |
97 Bk (247) |
98 Cf (249) |
99 Es (254) |
100 Fm (253) |
101 Md (256) |
102 No (254) |
103 Lr (257) |
** Groups are noted by 3 notation conventions.
For a list of a the element names and symbols in
alphabetical order, click here