Atomic mass of all elements (along with the rounded off values) is mentioned in the chart below.
Atomic Number | Element | Atomic Mass (u) | Atomic mass (u)(Rounded off) |
---|---|---|---|
1 | Atomic mass of Hydrogen (H) | 1.008 | 1 |
2 | Atomic mass of Helium (He) | 4.002 | 4 |
3 | Atomic mass of Lithium (Li) | 6.94 | 7 |
4 | Atomic mass of Beryllium (Be) | 9.012 | 9 |
5 | Atomic mass of Boron (B) | 10.81 | 11 |
6 | Atomic mass of Carbon (C) | 12.011 | 12 |
7 | Atomic mass of Nitrogen (N) | 14.007 | 14 |
8 | Atomic mass of Oxygen (O) | 15.999 | 16 |
9 | Atomic mass of Fluorine (F) | 18.998 | 19 |
10 | Atomic mass of Neon (Ne) | 20.180 | 20 |
11 | Atomic mass of Sodium (Na) | 22.990 | 23 |
12 | Atomic mass of Magnesium (Mg) | 24.305 | 24 |
13 | Atomic mass of Aluminum (Al) | 26.982 | 27 |
14 | Atomic mass of Silicon (Si) | 28.085 | 28 |
15 | Atomic mass of Phosphorus (P) | 30.974 | 31 |
16 | Atomic mass of Sulfur (S) | 32.06 | 32 |
17 | Atomic mass of Chlorine (Cl) | 35.45 | 35 |
18 | Atomic mass of Argon (Ar) | 39.95 | 40 |
19 | Atomic mass of Potassium (K) | 39.098 | 39 |
20 | Atomic mass of Calcium (Ca) | 40.078 | 40 |
21 | Atomic mass of Scandium (Sc) | 44.956 | 45 |
22 | Atomic mass of Titanium (Ti) | 47.867 | 48 |
23 | Atomic mass of Vanadium (V) | 50.942 | 51 |
24 | Atomic mass of Chromium (Cr) | 51.996 | 52 |
25 | Atomic mass of Manganese (Mn) | 54.938 | 55 |
26 | Atomic mass of Iron (Fe) | 55.845 | 56 |
27 | Atomic mass of Cobalt (Co) | 58.933 | 59 |
28 | Atomic mass of Nickel (Ni) | 58.693 | 59 |
29 | Atomic mass of Copper (Cu) | 63.546 | 64 |
30 | Atomic mass of Zinc (Zn) | 65.38 | 65 |
31 | Atomic mass of Gallium (Ga) | 69.723 | 70 |
32 | Atomic mass of Germanium (Ge) | 72.630 | 73 |
33 | Atomic mass of Arsenic (As) | 74.922 | 75 |
34 | Atomic mass of Selenium (Se) | 78.971 | 79 |
35 | Atomic mass of Bromine (Br) | 79.904 | 80 |
36 | Atomic mass of Krypton (Kr) | 83.798 | 84 |
37 | Atomic mass of Rubidium (Rb) | 85.468 | 85 |
38 | Atomic mass of Strontium (Sr) | 87.62 | 88 |
39 | Atomic mass of Yttrium (Y) | 88.906 | 89 |
40 | Atomic mass of Zirconium (Zr) | 91.224 | 91 |
41 | Atomic mass of Niobium (Nb) | 92.906 | 93 |
42 | Atomic mass of Molybdenum (Mo) | 95.95 | 96 |
43 | Atomic mass of Technetium (Tc) | (98) | (98) |
44 | Atomic mass of Ruthenium (Ru) | 101.07 | 101 |
45 | Atomic mass of Rhodium (Rh) | 102.91 | 103 |
46 | Atomic mass of Palladium (Pd) | 106.42 | 106 |
47 | Atomic mass of Silver (Ag) | 107.87 | 108 |
48 | Atomic mass of Cadmium (Cd) | 112.41 | 112 |
49 | Atomic mass of Indium (In) | 114.82 | 115 |
50 | Atomic mass of Tin (Sn) | 118.71 | 119 |
51 | Atomic mass of Antimony (Sb) | 121.76 | 122 |
52 | Atomic mass of Tellurium (Te) | 127.60 | 128 |
53 | Atomic mass of Iodine (I) | 126.90 | 127 |
54 | Atomic mass of Xenon (Xe) | 131.29 | 131 |
55 | Atomic mass of Cesium (Cs) | 132.91 | 133 |
56 | Atomic mass of Barium (Ba) | 137.33 | 137 |
57 | Atomic mass of Lanthanum (La) | 138.91 | 139 |
58 | Atomic mass of Cerium (Ce) | 140.12 | 140 |
59 | Atomic mass of Praseodymium (Pr) | 140.91 | 141 |
60 | Atomic mass of Neodymium (Nd) | 144.24 | 144 |
61 | Atomic mass of Promethium (Pm) | 145.00 | 145 |
62 | Atomic mass of Samarium (Sm) | 150.36 | 150 |
63 | Atomic mass of Europium (Eu) | 151.96 | 152 |
64 | Atomic mass of Gadolinium (Gd) | 157.25 | 157 |
65 | Atomic mass of Terbium (Tb) | 158.93 | 159 |
66 | Atomic mass of Dysprosium (Dy) | 162.50 | 163 |
67 | Atomic mass of Holmium (Ho) | 164.93 | 165 |
68 | Atomic mass of Erbium (Er) | 167.26 | 167 |
69 | Atomic mass of Thulium (Tm) | 168.93 | 169 |
70 | Atomic mass of Ytterbium (Yb) | 173.05 | 173 |
71 | Atomic mass of Lutetium (Lu) | 174.97 | 175 |
72 | Atomic mass of Hafnium (Hf) | 178.49 | 178 |
73 | Atomic mass of Tantalum (Ta) | 180.95 | 181 |
74 | Atomic mass of Tungsten (W) | 183.84 | 184 |
75 | Atomic mass of Rhenium (Re) | 75 | 75 |
76 | Atomic mass of Osmium (Os) | 190.23 | 190 |
77 | Atomic mass of Iridium (Ir) | 192.22 | 192 |
78 | Atomic mass of Platinum (Pt) | 195.08 | 195 |
79 | Atomic mass of Gold (Au) | 107.87 | 108 |
80 | Atomic mass of Mercury (Hg) | 200.59 | 201 |
81 | Atomic mass of Thallium (Tl) | 204.38 | 204 |
82 | Atomic mass of Lead (Pb) | 207.2 | 207 |
83 | Atomic mass of Bismuth (Bi) | 208.98 | 209 |
84 | Atomic mass of Polonium (Po) | (209) | (209) |
85 | Atomic mass of Astatine (At) | (210) | (210) |
86 | Atomic mass of Radon (Rn) | (222) | (222) |
87 | Atomic mass of Francium (Fr) | (223) | (223) |
88 | Atomic mass of Radium (Ra) | (226) | (226) |
89 | Atomic mass of Actinium (Ac) | (227) | (227) |
90 | Atomic mass of Thorium (Th) | 232.04 | 232 |
91 | Atomic mass of Protactinium (Pa) | 231.04 | 231 |
92 | Atomic mass of Uranium (U) | 238.03 | 238 |
93 | Atomic mass of Neptunium (Np) | (237) | (237) |
94 | Atomic mass of Plutonium (Pu) | (244) | (244) |
95 | Atomic mass of Americium (Am) | (243) | (243) |
96 | Atomic mass of Curium (Cm) | (247) | (247) |
97 | Atomic mass of Berkelium (Bk) | (247) | (247) |
98 | Atomic mass of Californium (Cf) | (251) | (251) |
99 | Atomic mass of Einsteinium (Es) | (252) | (252) |
100 | Atomic mass of Fermium (Fm) | (257) | (257) |
101 | Atomic mass of Mendelevium (Md) | (258) | (258) |
102 | Atomic mass of Nobelium (No) | (259) | (259) |
103 | Atomic mass of Lawrencium (Lr) | (266) | (266) |
104 | Atomic mass of Rutherfordium (Rf) | (267) | (267) |
105 | Atomic mass of Dubnium (Db) | (268) | (268) |
106 | Atomic mass of Seaborgium (Sg) | (269) | (269) |
107 | Atomic mass of Bohrium (Bh) | (270) | (270) |
108 | Atomic mass of Hassium (Hs) | (277) | (277) |
109 | Atomic mass of Meitnerium (Mt) | (278) | (278) |
110 | Atomic mass of Darmstadtium (Ds) | (281) | (281) |
111 | Atomic mass of Roentgenium (Rg) | (282) | (282) |
112 | Atomic mass of Copernicium (Cn) | (285) | (285) |
113 | Atomic mass of Nihonium (Nh) | (286) | (286) |
114 | Atomic mass of Flerovium (Fl) | (289) | (289) |
115 | Atomic mass of Moscovium (Mc) | (290) | (290) |
116 | Atomic mass of Livermorium (Lv) | (293) | (293) |
117 | Atomic mass of Tennessine (Ts) | (294) | (294) |
118 | Atomic mass of Oganesson (Og) | (294) | (294) |
Note:
- The Atomic masses are represented in the Atomic mass unit (u).
- The elements whose atomic masses are written in bracket ( ) are the synthetic elements and their atomic masses values represent the Atomic Mass of the most stable isotope.
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