Atomic Number Of Elements From 1 To 30

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We remember from our school chemistry course that every element has its own specific atomic number. It is the same as the number of protons that the atom of each element has, so sometimes atomic number is called proton number. It is always the whole number and it ranges from 1 to 118, according to the number of the element in the Periodic Table. This number can be really important and something essential to know, in relation to a certain chemical element which is the issue of our interest at the moment.

Why is this so? Why is the atomic number so important? First of all, it is the number that makes elements different from one another as it shows the number of protons in their nuclei. Also, knowing the atomic number of an element can give us an idea about the position of the element in the Periodic Table. Atomic number of an element never changes: for example, the atomic number of oxygen is always 8, and the atomic number of Chlorine is always 18. The atomic number is marked with the symbol Z, taken from a German word zahl (or atomzahl, which is 'atomic number' in German).

Also, knowing the atomic number of an element can give us an idea about the position of the element in the Periodic Table. Atomic number of an element never changes: for example, the atomic number of oxygen is always 8, and the atomic number of Chlorine is always 18. The atomic number is marked with the symbol Z, taken from a German word zahl. Standard atomic weight is used to give the value of the mean of the atomic masses in a mixture of isotopes in a given sample of an element. Atomic Mass of First 30 Elements. Given below is a table that lists the first 30 elements based on atomic number and their corresponding atomic mass.

This website is created for those who need to know the atomic number of a central chemical element. By using our website, you can do it in just one click and receive short and correct information on this matter. There is also some extra summary on every each chemical element which can be found at our website, including the atomic weight of each element, as well as physical and chemical properties of every element and its importance. Use this website at any time when you need to get fast and precise information about atomic or proton number of chemical elements.

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List of chemical elements in periodic table with atomic number, chemical symbol and atomic weight. You can sort the elements by clicking on the table headers. Please click on the element name for complete list of element properties.

Atomic NumberChemical SymbolElement NameAtomic Weight (u)
1HHydrogen1.008
2HeHelium4.003
3LiLithium6.94
4BeBeryllium9.012
5BBoron10.81
6CCarbon12.011
7NNitrogen14.007
8OOxygen15.999
9FFluorine18.998
10NeNeon20.18
11NaSodium22.99
12MgMagnesium24.305
13AlAluminium26.982
14SiSilicon28.085
15PPhosphorus30.974
16SSulfur32.06
17ClChlorine35.45
18ArArgon39.948
19KPotassium39.098
20CaCalcium40.078
21ScScandium44.956
22TiTitanium47.867
23VVanadium50.942
24CrChromium51.996
25MnManganese54.938
26FeIron55.845
27CoCobalt58.933
28NiNickel58.693
29CuCopper63.546
30ZnZinc65.38
31GaGallium69.723
32GeGermanium72.63
33AsArsenic74.922
34SeSelenium78.971
35BrBromine79.904
36KrKrypton83.798
37RbRubidium85.468
38SrStrontium87.62
39YYttrium88.906
40ZrZirconium91.224
41NbNiobium92.906
42MoMolybdenum95.95
43TcTechnetium98
44RuRuthenium101.07
45RhRhodium102.906
46PdPalladium106.42
47AgSilver107.868
48CdCadmium112.414
49InIndium114.818
50SnTin118.71
51SbAntimony121.76
52TeTellurium127.6
53IIodine126.904
54XeXenon131.293
55CsCaesium132.905
56BaBarium137.327
57LaLanthanum138.905
58CeCerium140.116
59PrPraseodymium140.908
60NdNeodymium144.242
61PmPromethium145
62SmSamarium150.36
63EuEuropium151.964
64GdGadolinium157.25
65TbTerbium158.925
66DyDysprosium162.5
67HoHolmium164.93
68ErErbium167.259
69TmThulium168.934
70YbYtterbium173.045
71LuLutetium174.967
72HfHafnium178.49
73TaTantalum180.948
74WTungsten183.84
75ReRhenium186.207
76OsOsmium190.23
77IrIridium192.217
78PtPlatinum195.084
79AuGold196.967
80HgMercury200.592
81TlThallium204.38
82PbLead207.2
83BiBismuth208.98
84PoPolonium209
85AtAstatine210
86RnRadon222
87FrFrancium223
88RaRadium226
89AcActinium227
90ThThorium232.038
91PaProtactinium231.036
92UUranium238.029
93NpNeptunium237
94PuPlutonium244
95AmAmericium243
96CmCurium247
97BkBerkelium247
98CfCalifornium251
99EsEinsteinium252
100FmFermium257
101MdMendelevium258
102NoNobelium259
103LrLawrencium266
104RfRutherfordium267
105DbDubnium268
106SgSeaborgium269
107BhBohrium270
108HsHassium277
109MtMeitnerium278
110DsDarmstadtium281
111RgRoentgenium282
112CnCopernicium285
113NhNihonium286
114FlFlerovium289
115McMoscovium290
116LvLivermorium293
117TsTennessine294
118OgOganesson294

FromAtomic number of elements from 1 to 30 with electronic configuration

Lists of Elements in Periodic Table

You can also list the elements in various ordered properties with printable tables below.

Lists of Elements by Group Number in Periodic Table

» Group 1» Group 2» Group 3» Group 4» Group 5» Group 6» Group 7» Group 8» Group 9» Group 10» Group 11» Group 12» Group 13» Group 14» Group 15» Group 16» Group 17» Group 18

List of elements ordered by electronegativity is listed in the table below with atomic number, chemical symbol and electronegativity value. To list the elements order by electronegativity, click on the table headers. You can print the list of elements by hitting the print button below.

Atomic Number Of Elements From 1 To 302

The element which has the highest electronegativity value is Fluorine with 3.98 χ. And the element which has the lowest electronegativity value is Francium in 0.7 χ.

Atomic Number Of Elements From 1 To 300

Atomic NumberChemical SymbolElement NameElectronegativity χ
9FFluorine3.98
8OOxygen3.44
17ClChlorine3.16
7NNitrogen3.04
36KrKrypton3
35BrBromine2.96
53IIodine2.66
54XeXenon2.6
16SSulfur2.58
6CCarbon2.55
34SeSelenium2.55
79AuGold2.54
74WTungsten2.36
82PbLead2.33
78PtPlatinum2.28
45RhRhodium2.28
44RuRuthenium2.2
46PdPalladium2.2
76OsOsmium2.2
85AtAstatine2.2
77IrIridium2.2
1HHydrogen2.2
15PPhosphorus2.19
33AsArsenic2.18
42MoMolybdenum2.16
52TeTellurium2.1
51SbAntimony2.05
5BBoron2.04
83BiBismuth2.02
32GeGermanium2.01
84PoPolonium2
80HgMercury2
50SnTin1.96
47AgSilver1.93
27CoCobalt1.91
75ReRhenium1.9
14SiSilicon1.9
43TcTechnetium1.9
29CuCopper1.9
28NiNickel1.88
26FeIron1.83
31GaGallium1.81
49InIndium1.78
48CdCadmium1.69
24CrChromium1.66
30ZnZinc1.65
23VVanadium1.63
81TlThallium1.62
13AlAluminium1.61
41NbNiobium1.6
4BeBeryllium1.57
25MnManganese1.55
22TiTitanium1.54
91PaProtactinium1.5
73TaTantalum1.5
92UUranium1.38
93NpNeptunium1.36
21ScScandium1.36
40ZrZirconium1.33
12MgMagnesium1.31
72HfHafnium1.3
99EsEinsteinium1.3
100FmFermium1.3
98CfCalifornium1.3
101MdMendelevium1.3
102NoNobelium1.3
103LrLawrencium1.3
97BkBerkelium1.3
96CmCurium1.3
95AmAmericium1.3
90ThThorium1.3
94PuPlutonium1.28
71LuLutetium1.27
69TmThulium1.25
68ErErbium1.24
67HoHolmium1.23
66DyDysprosium1.22
39YYttrium1.22
64GdGadolinium1.2
62SmSamarium1.17
60NdNeodymium1.14
59PrPraseodymium1.13
58CeCerium1.12
57LaLanthanum1.1
89AcActinium1.1
20CaCalcium1
3LiLithium0.98
38SrStrontium0.95
11NaSodium0.93
88RaRadium0.9
56BaBarium0.89
19KPotassium0.82
37RbRubidium0.82
55CsCaesium0.79
87FrFrancium0.7

Atomic Number Of Elements From 1 To 308