Elements, Chemicals and Chemistry

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# Symbol Name Atomic Weight Electron Configuration
1 H Idrogeno 1.00794 1s1
2 He Elio 4.002602 1s2
3 Li Litio 6.941 [He] 2s1
4 Be Berillio 9.012182 [He] 2s2
5 B Boro 10.811 [He] 2s2 2p1
6 C Carbonio 12.0107 [He] 2s2 2p2
7 N Azoto 14.0067 [He] 2s2 2p3
8 O Ossigeno 15.9994 [He] 2s2 2p4
9 F Fluoro 18.9984032 [He] 2s2 2p5
10 Ne Neon 20.1797 [He] 2s2 2p6
11 Na Sodio 22.98976928 [Ne] 3s1
12 Mg Magnesio 24.305 [Ne] 3s2
13 Al Alluminio 26.9815386 [Ne] 3s2 3p1
14 Si Silicio 28.0855 [Ne] 3s2 3p2
15 P Fosforo 30.973762 [Ne] 3s2 3p3
16 S Zolfo 32.065 [Ne] 3s2 3p4
17 Cl Cloro 35.453 [Ne] 3s2 3p5
18 Ar Argo 39.948 [Ne] 3s2 3p6
19 K Potassio 39.0983 [Ar] 4s1
20 Ca Calcio 40.078 [Ar] 4s2
21 Sc Scandio 44.955912 [Ar] 3d1 4s2
22 Ti Titanio 47.867 [Ar] 3d2 4s2
23 V Vanadio 50.9415 [Ar] 3d3 4s2
24 Cr Cromo 51.9961 [Ar] 3d5 4s1
25 Mn Manganese 54.938045 [Ar] 4s2 3d5
26 Fe Ferro 55.845 [Ar] 4s2 3d6
27 Co Cobalto 58.933195 [Ar] 3d7 4s2
28 Ni Nichelio 58.6934 [Ar] 3d8 4s2
29 Cu Rame 63.546 [Ar] 3d10 4s1
30 Zn Zinco 65.409 [Ar] 3d10 4s2
31 Ga Gallio 69.723 [Ar] 3d10 4s2 4p1
32 Ge Germanio 72.64 [Ar] 3d10 4s2 4p2
33 As Arsenico 74.9216 [Ar] 3d10 4s2 4p3
34 Se Selenio 78.96 [Ar] 4s2 3d10 4p4
35 Br Bromo 79.904 [Ar] 4s2 3d10 4p5
36 Kr Kripto 83.798 [Ar] 3d10 4s2 4p6
37 Rb Rubidio 85.4678 [Kr] 5s1
38 Sr Stronzio 87.62 [Kr] 5s2
39 Y Ittrio 88.90585 [Kr] 4d1 5s2
40 Zr Zirconio 91.224 [Kr] 4d2 5s2
41 Nb Niobio 92.90638 [Kr] 4d4 5s1
42 Mo Molibdeno 95.94 [Kr] 4d5 5s1
43 Tc Tecnezio (98) [Kr] 4d5 5s2
44 Ru Rutenio 101.07 [Kr] 4d7 5s1
45 Rh Rodio 102.9055 [Kr] 4d8 5s1
46 Pd Palladio 106.42 [Kr] 4d10
47 Ag Argento 107.8682 [Kr] 4d10 5s1
48 Cd Cadmio 112.411 [Kr] 4d10 5s2
49 In Indio 114.818 [Kr] 4d10 5s2 5p1
50 Sn Stagno 118.71 [Kr] 4d10 5s2 5p2
51 Sb Antimonio 121.76 [Kr] 4d10 5s2 5p3
52 Te Tellurio 127.6 [Kr] 5s2 4d10 5p4
53 I Iodio 126.90447 [Kr] 4d10 5s2 5p5
54 Xe Xeno 131.293 [Kr] 4d10 5s2 5p6
55 Cs Cesio 132.9054519 [Xe] 6s1
56 Ba Bario 137.327 [Xe] 6s2
57 La Lantanio 138.90547 [Xe] 5d1 6s2
58 Ce Cerio 140.116 [Xe] 4f1 5d1 6s2
59 Pr Praseodimio 140.90765 [Xe] 4f3 6s2
60 Nd Neodimio 144.242 [Xe] 4f4 6s2
61 Pm Promezio (145) [Xe] 4f5 6s2
62 Sm Samario 150.36 [Xe] 4f6 6s2
63 Eu Europio 151.964 [Xe] 4f7 6s2
64 Gd Gadolinio 157.25 [Xe] 4f7 5d1 6s2
65 Tb Terbio 158.92535 [Xe] 4f9 6s2
66 Dy Disprosio 162.5 [Xe] 4f10 6s2
67 Ho Olmio 164.93032 [Xe] 4f11 6s2
68 Er Erbio 167.259 [Xe] 4f12 6s2
69 Tm Tulio 168.93421 [Xe] 4f13 6s2
70 Yb Itterbio 173.04 [Xe] 4f14 6s2
71 Lu Lutezio 174.967 [Xe] 6s2 4f14 5d1
72 Hf Hafnio 178.49 [Xe] 4f14 5d2 6s2
73 Ta Tantalio 180.94788 [Xe] 4f14 5d3 6s2
74 W Tungsteno 183.84 [Xe] 4f14 5d4 6s2
75 Re Renio 186.207 [Xe] 4f14 5d5 6s2
76 Os Osmio 190.23 [Xe] 4f14 5d6 6s2
77 Ir Iridio 192.217 [Xe] 4f14 5d7 6s2
78 Pt Platino 195.084 [Xe] 4f14 5d9 6s1
79 Au Oro 196.966569 [Xe] 4f14 5d10 6s1
80 Hg Mercurio 200.59 [Xe] 4f14 5d10 6s2
81 Tl Tallio 204.3833 [Xe] 4f14 5d10 6s2 6p1
82 Pb Piombo 207.2 [Xe] 4f14 5d10 6s2 6p2
83 Bi Bismuto 208.9804 [Xe] 4f14 5d10 6s2 6p3
84 Po Polonio (209) [Xe] 6s2 4f14 5d10 6p4
85 At Astato (210) [Xe] 4f14 5d10 6s2 6p5
86 Rn Radon (222) [Xe] 4f14 5d10 6s2 6p6
87 Fr Francio (223) [Rn] 7s1
88 Ra Radio (226) [Rn] 7s2
89 Ac Attinio (227) [Rn] 6d1 7s2
90 Th Torio 232.0381 [Rn] 6d2 7s2
91 Pa Protoattinio 231.03588 [Rn] 5f2 6d1 7s2
92 U Uranio 238.02891 [Rn] 5f3 6d1 7s2
93 Np Nettunio (237) [Rn] 5f4 6d1 7s2
94 Pu Plutonio (244) [Rn] 5f6 7s2
95 Am Americio (243) [Rn] 5f7 7s2
96 Cm Curio (247) [Rn] 5f7 6d1 7s2
97 Bk Berkelio (247) [Rn] 5f9 7s2
98 Cf Californio (251) [Rn] 5f10 7s2
99 Es Einstenio (252) [Rn] 5f11 7s2
100 Fm Fermio (257) [Rn] 5f12 7s2
101 Md Mendelevio (258) [Rn] 5f13 7s2
102 No Nobelio (259) [Rn] 5f14 7s2
103 Lr Laurenzio (262) [Rn] 5f14 6d1 7s2
104 Rf Rutherfordio (265) [Rn] 5f14 6d2 7s2
105 Db Dubnio (268) [Rn] 5f14 6d3 7s2
106 Sg Seaborgio (263) [Rn] 5f14 6d4 7s2
107 Bh Bohrio (272) [Rn] 5f14 6d5 7s2
108 Hs Hassio (278) [Rn] 5f14 6d6 7s2
109 Mt Meitnerio (278) [Rn] 5f14 6d7 7s2
110 Ds Darmstadtio (281) [Rn] 5f14 6d9 7s1
111 Rg Roentgenio (280) [Rn] 5f14 6d10 7s1
112 Cn Copernicio (285) [Rn] 5f14 6d10 7s2
113 Nh Nihonio (284) [Rn] 5f14 6d10 7s2 7p1
114 Fl Flerovio (289) [Rn] 5f14 6d10 7s2 7p2
115 Mc Moscovio (288) [Rn] 5f14 6d10 7s2 7p3
116 Lv Livermorio (293) [Rn] 5f14 6d10 7s2 7p4
117 Ts Ununseptio (294) [Rn] 5f14 6d10 7s2 7p5
118 Og Ununoctio (294) [Rn] 7s2 5f14 6d10 7p6
Periodic Table
Definition of the Day
aromatic compound
a hydrocarbon containing one or more benzene rings that are characteristic of the benzene series of compounds
(Chem.), one of a large class of organic substances, as the oils of bitter almonds, wintergreen, and turpentine, the balsams, camphors, etc., many of which have an aromatic odor. They include many of the most important of the carbon compounds and may all be derived from the benzene group, C6H6. The term is extended also to many of their derivatives.