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Wiki User
∙ 16y agoSee the Web Links to the left for other sources.
(atomic number, symbol, name, atomic weight)
1 H Hydrogen 1.00794(7)
2 He Helium 4.002602(2)
3 Li Lithium 6.941(2)
4 Be Beryllium 9.012182(3)
5 B Boron 10.811(7)
6 C Carbon 12.0107(8)
7 N Nitrogen 14.0067(2)
8 O Oxygen 15.9994(3)
9 F Fluorine 18.9984032(5)
10 Ne Neon 20.1797(6)
11 Na Sodium 22.98976928(2)
12 Mg Magnesium 24.3050(6)
13 Al Aluminium 26.9815386(8)
14 Si Silicon 28.0855(3)
15 P Phosphorus 30.973762(2)
16 S Sulfur 32.065(5)
17 Cl Chlorine 35.453(2)
18 Ar Argon 39.948(1)
19 K Potassium 39.0983(1)
20 Ca Calcium 40.078(4)
21 Sc Scandium 44.955912(6)
22 Ti Titanium 47.867(1)
23 V Vanadium 50.9415(1)
24 Cr Chromium 51.9961(6)
25 Mn Manganese 54.938045(5)
26 Fe Iron 55.845(2)
27 Co Cobalt 58.933195(5)
28 Ni Nickel 58.6934(2)
29 Cu Copper 63.546(3)
30 Zn Zinc 65.409(4)
31 Ga Gallium 69.723(1)
32 Ge Germanium 72.64(1)
33 As Arsenic 74.92160(2)
34 Se Selenium 78.96(3)
35 Br Bromine 79.904(1)
36 Kr Krypton 83.798(2)
37 Rb Rubidium 85.4678(3)
38 Sr Strontium 87.62(1)
39 Y Yttrium 88.90585(2)
40 Zr Zirconium 91.224(2)
41 Nb Niobium 92.90638(2)
42 Mo Molybdenum 95.94(2)
43 Tc Technetium [98]
44 Ru Ruthenium 101.07(2)
45 Rh Rhodium 102.90550(2)
46 Pd Palladium 106.42(1)
47 Ag Silver 107.8682(2)
48 Cd Cadmium 112.411(8)
49 In Indium 114.818(3)
50 Sn Tin 118.710(7)
51 Sb Antimony 121.760(1)
52 Te Tellurium 127.60(3)
53 I Iodine 126.90447(3)
54 Xe Xenon 131.293(6)
55 Cs Caesium 132.9054519(2)
56 Ba Barium 137.327(7)
57 La Lanthanum 138.90547(7)
58 Ce Cerium 140.116(1)
59 Pr Praseodymium 140.90765(2)
60 Nd Neodymium 144.242(3)
61 Pm Promethium [145] 5
62 Sm Samarium 150.36(2)
63 Eu Europium 151.964(1)
64 Gd Gadolinium 157.25(3)
65 Tb Terbium 158.92535(2)
66 Dy Dysprosium 162.500(1)
67 Ho Holmium 164.93032(2)
68 Er Erbium 167.259(3)
69 Tm Thulium 168.93421(2)
70 Yb Ytterbium 173.04(3)
71 Lu Lutetium 174.967(1)
72 Hf Hafnium 178.49(2)
73 Ta Tantalum 180.94788(2)
74 W Tungsten 183.84(1)
75 Re Rhenium 186.207(1)
76 Os Osmium 190.23(3)
77 Ir Iridium 192.217(3)
78 Pt Platinum 195.084(9)
79 Au Gold 196.966569(4)
80 Hg Mercury 200.59(2)
81 Tl Thallium 204.3833(2)
82 Pb Lead 207.2(1)
83 Bi Bismuth 208.98040(1)
84 Po Polonium [209]
85 At Astatine [210]
86 Rn Radon [222] 5
87 Fr Francium [223]
88 Ra Radium [226] 5
89 Ac Actinium [227]
90 Th Thorium 232.03806(2)
91 Pa Protactinium 231.03588(2)
92 U Uranium 238.02891(3)
93 Np Neptunium [237]
94 Pu Plutonium [244]
95 Am Americium [243]
96 Cm Curium [247]
97 Bk Berkelium [247]
98 Cf Californium [251]
99 Es Einsteinium [252]
100 Fm Fermium [257]
101 Md Mendelevium [258]
102 No Nobelium [259]
103 Lr Lawrencium [262]
104 Rf Rutherfordium [267]
105 Db Dubnium [268]
106 Sg Seaborgium [271]
107 Bh Bohrium [272]
108 Hs Hassium [270]
109 Mt Meitnerium [276]
110 Ds Darmstadtium [281]
111 Rg Roentgenium [280]
112 Uub Ununbium [285]
113 Uut Ununtrium [284]
114 Uuq Ununquadium [289]
115 Uup Ununpentium [288]
116 Uuh Ununhexium [293]
118 Uuo Ununoctium [294]
Wiki User
∙ 15y agoNo Symbol Name Atomic Wt 1 H Hydrogen 1.00794(7) 2 He Helium 4.002602(2) 3 Li Lithium [6.941(2)] 4 Be Beryllium 9.012182(3) 5 B Boron 10.811(7)
6 C Carbon 12.0107(8)
7 N Nitrogen 14.0067(2)
8 O Oxygen 15.9994(3)
9 F Fluorine 18.9984032(5) 10 Ne Neon 20.1797(6)
11 Na Sodium 22.98976928(2) 12 Mg Magnesium 24.3050(6) 13 Al Aluminium 26.9815386(8) 14 Si Silicon 28.0855(3)
15 P Phosphorus 30.973762(2) 16 S Sulfur 32.065(5)
17 Cl Chlorine 35.453(2)
18 Ar Argon 39.948(1)
19 K Potassium 39.0983(1)
20 Ca Calcium 40.078(4)
21 Sc Scandium 44.955912(6) 22 Ti Titanium 47.867(1) 23 V Vanadium 50.9415(1) 24 Cr Chromium 51.9961(6) 25 Mn Manganese 54.938045(5) 26 Fe Iron 55.845(2) 27 Co Cobalt 58.933195(5) 28 Ni Nickel 58.6934(4) 29 Cu Copper 63.546(3)
30 Zn Zinc 65.38(2)
31 Ga Gallium 69.723(1) 32 Ge Germanium 72.64(1) 33 As Arsenic 74.92160(2) 34 Se Selenium 78.96(3) 35 Br Bromine 79.904(1) 36 Kr Krypton 83.798(2)
37 Rb Rubidium 85.4678(3)
38 Sr Strontium 87.62(1)
39 Y Yttrium 88.90585(2) 40 Zr Zirconium 91.224(2)
41 Nb Niobium 92.90638(2) 42 Mo Molybdenum 95.96(2)
43 Tc Technetium [98]
44 Ru Ruthenium 101.07(2)
45 Rh Rhodium 102.90550(2) 46 Pd Palladium 106.42(1)
47 Ag Silver 107.8682(2)
48 Cd Cadmium 112.411(8)
49 In Indium 114.818(3) 50 Sn Tin 118.710(7)
51 Sb Antimony 121.760(1)
52 Te Tellurium 127.60(3)
53 I Iodine 126.90447(3) 54 Xe Xenon 131.293(6)
55 Cs Caesium 132.9054519(2) 56 Ba Barium 137.327(7) 57 La Lanthanum 138.90547(7)
58 Ce Cerium 140.116(1)
59 Pr Praseodymium 140.90765(2) 60 Nd Neodymium 144.242(3)
61 Pm Promethium [145]
62 Sm Samarium 150.36(2)
63 Eu Europium 151.964(1)
64 Gd Gadolinium 157.25(3)
65 Tb Terbium 158.92535(2) 66 Dy Dysprosium 162.500(1)
67 Ho Holmium 164.93032(2) 68 Er Erbium 167.259(3)
69 Tm Thulium 168.93421(2) 70 Yb Ytterbium 173.054(5)
71 Lu Lutetium 174.9668(1)
72 Hf Hafnium 178.49(2) 73 Ta Tantalum 180.94788(2) 74 W Tungsten 183.84(1) 75 Re Rhenium 186.207(1) 76 Os Osmium 190.23(3)
77 Ir Iridium 192.217(3) 78 Pt Platinum 195.084(9) 79 Au Gold 196.966569(4) 80 Hg Mercury 200.59(2) 81 Tl Thallium 204.3833(2) 82 Pb Lead 207.2(1)
83 Bi Bismuth 208.98040(1) 84 Po Polonium [209]
85 At Astatine [210]
86 Rn Radon [222]
87 Fr Francium [223]
88 Ra Radium [226]
89 Ac Actinium [227]
90 Th Thorium 232.03806(2)
91 Pa Protactinium 231.03588(2)
92 U Uranium 238.02891(3)
93 Np Neptunium [237]
94 Pu Plutonium [244]
95 Am Americium [243]
96 Cm Curium [247]
97 Bk Berkelium [247]
98 Cf Californium [251]
99 Es Einsteinium [252]
100 Fm Fermium [257]
101 Md Mendelevium [258]
102 No Nobelium [259]
103 Lr Lawrencium [262]
104 Rf Rutherfordium [267]
105 Db Dubnium [268]
106 Sg Seaborgium [271]
107 Bh Bohrium [272]
108 Hs Hassium [270]
109 Mt Meitnerium [276]
110 Ds Darmstadtium [281]
111 Rg Roentgenium [280]
112 Uub Ununbium [285]
113 Uut Ununtrium [284]
114 Uuq Ununquadium [289]
115 Uup Ununpentium [288]
116 Uuh Ununhexium [293]
118 Uuo Ununoctium [294]
[number] is estimated
(number) is rounded
Wiki User
∙ 8y agoWhy are atomic weights given as fraction and not whole numbes like weight = proton + neutrons? Because they are taking an average of the weight of the naturally occurring isotopes, so that when you use the tables and you are using atoms from earth (most do :D ) then these fraction values will be correct most of the time, whereas just taking the weight of the most common isotope and ignore the others would give major errors.
Wiki User
∙ 11y agoTo find this out you need to look at a Periodic Table. The link below will show you one.
Wiki User
∙ 11y agothe atomic weight of an element is the
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What element has 121.75 as it's atomic weight?
The element of Antimony (Sb) would have the atomic weight of 121.75.
What are the main contributors to the weight of an atomic element?
The protons and neutrons are the main contributors to the weight of an atomic element.
How you calculate the relative atomic weight of uranium?
The atomic weight of an element is derived from the atomic masses of the isotopes of this element and from the percentage of these isotopes. The correct terms are: - atomic weight for elements - atomic mass for an isotope
What is the fraction in calculating the average atomic weight of an element?
The atomic weight (not mass) of a chemical element is calculated considering the isotopic composition of the element and the atomic masses (not weights) of these isotopes.
Which element has atomic weight of 79?
Selenium (Se) has an atomic weight of 79,04.
What element in the periodic table has an atomic weight of 912.2?
The Truth? Well, there is no element with that atomic weight. The highest atomic weight is 262.11 Sorry!
What element has 121.75 as it's atomic weight?
The element of Antimony (Sb) would have the atomic weight of 121.75.
What are the main contributors to the weight of an atomic element?
The protons and neutrons are the main contributors to the weight of an atomic element.
Which element has an atomic weight?
All elements have an (atomic) weight or mass.
How you calculate the relative atomic weight of uranium?
The atomic weight of an element is derived from the atomic masses of the isotopes of this element and from the percentage of these isotopes. The correct terms are: - atomic weight for elements - atomic mass for an isotope
What element has an atomic mass of 50.942?
Vanadium is the element that has an atomic weight of 50.942.
What is the fraction in calculating the average atomic weight of an element?
The atomic weight (not mass) of a chemical element is calculated considering the isotopic composition of the element and the atomic masses (not weights) of these isotopes.
What is the atomic weight of petroleum 235?
Petroleum is not an element and therefore has no atomic weight!
Which element has atomic weight of 79?
Selenium (Se) has an atomic weight of 79,04.
What is the atomic weight of a fly?
a fly is not an element so it does not have an "atomic" weight. It does have a mass or weight however
Average weight of an element expressed in atomic mass units?
Average weight of an element expressed in Atomic Mass units.
The atomic weight of an element is determined by what?
The atomic number of an element is determined by the number of protons in its nucleus.
