| group 1 |
18 | |||||||||||||||||
| period 1 |
1 h hydrogen 1.01 |
2 | 13 | 14 | 15 | 16 | 17 | 2 he helium 4.00 |
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| 2 | 3 li lithium 6.94 |
4 be beryllium 9.01 |
5 b boron 10.81 |
6 c carban 12.01 |
7 n nitrogen 14.01 |
8 o oxygen 16.00 |
9 f fluorine 19.00 |
10 ne neon 20.18 |
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| 3 | 11 na sodium 22.99 |
12 mg magnesium 24.31 |
3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 al aluminium 26.98 |
14 si silicon 28.09 |
15 p phosphorus 30.97 |
16 s sulfur 32.06 |
17 cl chlorine 35.45 |
18 ar argon 39.95 |
| 4 | 19 k potassium 39.10 |
20 ca calcium 40.08 |
21 sc scandium 44.96 |
22 ti titanium 47.88 |
23 v vanadium 50.94 |
24 cr chromium 51.99 |
25 mn manganese 54.94 |
26 fe iron 55.85 |
27 co cobalt 58.93 |
28 ni nickel 58.69 |
29 cu copper 63.55 |
30 zn zinc 65.38 |
31 ga gallium 69.72 |
32 ge germanium 72.63 |
33 as arsenic 74.92 |
34 se selenium 78.97 |
35 br bromine 79.90 |
36 kr krypton 83.80 |
| 5 | 37 rb rubidium 85.47 |
38 sr strontium 87.62 |
39 y yttrium 88.91 |
40 zr zirconium 91.22 |
41 nb niobium 92.91 |
42 mo molybdenum 95.95 |
43 tc technetium 98.91 |
44 ru ruthenium 101.07 |
45 rh rhodium 102.91 |
46 pd palladium 106.42 |
47 ag silver 107.87 |
48 cd cadmium 112.41 |
49 in indium 114.82 |
50 sn tin 118.71 |
51 sb antimony 121.76 |
52 te tellurium 127.6 |
53 i iodion 126.90 |
54 xe xenon 131.29 |
| 6 | 55 cs caesium 132.91 |
56 ba barium 137.33 |
57-71 | 72 hf hafnium 178.49 |
73 ta tantalum 180.95 |
74 w tungsten 183.85 |
75 re rhenium 186.21 |
76 os osmium 190.23 |
77 ir iridium 192.22 |
78 pt platinum 195.08 |
79 au gold 196.97 |
80 hg mercury 200.59 |
81 tl thallium 204.38 |
82 pb lead 207.20 |
83 bi bismuth 208.98 |
84 po polonium [208.98] |
85 at astatine 209.98 |
86 rn radon 222.02 |
| 7 | 87 fr francium 223.02 |
88 ra radium 226.03 |
89-103 | 104 rf rutherford [261] |
105 db dubnium [262] |
106 sg seaborgium [266] |
107 bh bohrium [264] |
108 hs hassium [269] |
109 mt meitnerium [278] |
110 ds darmstadium [281] |
111 rg roentgenium [280] |
112 cn copernicium [285] |
113 nh nihonium [286] |
114 fl flerovium [289] |
115 mc moscovium [289] |
116 lv livermorium [293] |
117 ts tennessine [294] |
118 og oganesson [294] |
| 57 la lanthanum 138.91 |
58 ce cerium 140.12 |
59 pr praseody 140.91 |
60 nd neodymium 144.24 |
61 pm promethium 144.91 |
62 sm samarium 150.36 |
63 eu europium 151.96 |
64 gd gadolinium 157.25 |
65 tb terbium 158.93 |
66 dy dysprosium 162.50 |
67 ho holmium 164.93 |
68 er erbium 167.26 |
69 tm thulium 168.93 |
70 yb ytterbium 173.06 |
71 lu lutetium 174.97 |
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| 89 ac actinium 227.03 |
90 th thorium 232.04 |
91 pa protactinium 231.04 |
92 u uranium 238.03 |
93 np neptunium 237.05 |
94 pu plutonium 244.06 |
95 am americium 243.06 |
96 cm curium 247.07 |
97 bk berkelium 247.07 |
98 cf californium 251.08 |
99 es einsteinium [254] |
100 fm fermium 257.10 |
101 md mendelevium 258.10 |
102 no nobelium 259.10 |
103 lr lawrencium [262] |
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