The relative atomic mass table arranged by atomic number. The data from the 2005 iupac table periodic table (iupac 2005 standard atomic weights), with 12c = 12 as the standard. Square brackets in this table the atomic mass of the longest half-life of radioactive isotopes of mass number. Relative atomic mass filling the last digit of the uncertainty in the subsequent brackets. Atomic weight brackets for the longest half-life of radioactive isotopes of mass number 112-118 of element data is not iupac OK.
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- (1-56 h-ba) -
Atomic number element name of the element symbols relative atomic mass 1 H h 1.007 94 (7) 2 helium he 4.002 602 (2) 3 Li-li 6.941 (2) 4 Beryllium be 9.012 182 (3) 5 Boron b 10.811 (7) 6 C c 12.017 (8) 7 N n 14.006 7 (2) 8 O o 15.999 4 (3) 9 F f 18.998 403 2 (5) 10 Ne ne 20.179 7 (6) 11 Na na 22.989 769 28 (2) 12 Mg mg 24.305 0 (6) 13 aluminum al 26.981 538 6 (8) 14 Si si 28.085 5 (3) 15 P p 30.973 762 (2) 16 S s 32.065 (5) 17 Cl cl 35.453 (2) 18 Ar ar 39.948 (1) 19 K k 39.098 3 (1) 20 Ca ca 40.078 (4) 21 Sc sc 44.955 912 (6) 22 titanium ti 47.867 (1) 23 V v 50.941 5 (1) 24 Cr-cr 51.996 1 (6) 25 Manganese mn 54.938 045 (5) 26 iron fe 55.845 (2) 27 cobalt co 58.933 195 (5) 28 Ni-ni 58.693 4 (2) 29 copper cu 63.546 (3) 30 zinc zn 65.409 (4) 31 Ga ga 69.723 (1) 32 Ge ge 72.64 (1) 33 Arsenic as 74.921 60 (2) 34 Se se 78.96 (3) 35 bromine br 79.904 (1) 36 Kr kr 83.798 (2) 37 rubidium rb 85.467 8 (3) 38 Strontium sr 87.62 (1) 39 Y y 88.905 85 (2) 40 zirconium zr 91.224 (2) 41 Nb nb 92.906 38 (2) 42 Mo mo 95.94 (2) 43 Technetium tc [97.9072] 44 Ru ru 101.07 (2) 45 Rh rh 102.905 50 (2) 46 Pd pd 106.42 (1) 47 silver ag 107.868 2 (2) 48 Cd cd 112.411 (8) 49 Indium in 114.818 (3) 50 tin sn 118.710 (7) 51 antimony sb 121.760 (1) 52 Te te 127.60 (3) 53 Iodine i 126.904 47 (3) 54 Xenon xe 131.293 (6) 55 Cs cs 132.905 451 9 (2) 56 Ba ba 137.327 (7)
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- (72-88 hf-re) -
Atomic number element name of the element symbols relative atomic mass 72 Hf hf 178.49 (2) 73 Ta ta 180.947 88 (2) 74 W w 183.84 (1) 75 rhenium re 186.207 (1) 76 Os os 190.23 (3) 77 iridium ir 192.217 (3) 78 platinum pt 195.084 (9) 79 gold au 196.966 569 (4) 80 mercury hg 200.59 (2) 81 Thallium tl 204.383 3 (2) 82 lead pb 207.2 (1) 83 Bi-bi 208.980 40 (1) 84 polonium po [208.982 4] 85 Astatine at [209.987 1] 86 radon rn [222.017 6] 87 francium fr [223] 88 Radium re [226]
Translated by Google
- (89-103 ac-lr actinides) -
Atomic number element name of the element symbols relative atomic mass 89 Actinium ac [227] 90 Th th 232.038 06 (2) 91 protactinium pa 231.035 88 (2) 92 U u 238.028 91 (3) 93 neptunium np [237] 94 Pu pu [244] 95 Americium am [243] 96 curium cm [247] 97 Pei bk [247] 98 Cf cf [251] 99 Ai es [252] 100 Fei fm [257] 101 mendelevium md [258] 102 Nuo no [259] 103 rhodium lr [262]
Translated by Google
- (104-111 rf-rg) -
Atomic number element name of the element symbols relative atomic mass 104 Guoqi Lu rf [261] 105 Guoqi Du db [262] 106 Guoqi hi sg [266] 107 Guoqi wave bh [264] 108 Guoqi black hs [277] 109 Guoqi wheat mt [268] 110 Guoqi of ds [271] 111 Fen rg [272]