Elem |
Vegyjel |
Rendszám |
Atomtömeg |
Relatív sűrűség |
Olvadáspont [°C] |
Forráspont [°C] |
Izotópok száma |
Felfedező |
Felfedezés éve |
Aktínium |
Ac |
89 |
2272 |
10,07 |
1050 |
3200±300 |
11 |
Debierne |
1899 |
Alumínium |
Al |
13 |
26,9815 |
2,6989 |
660,37 |
2467 |
8 |
Wöhler |
1827 |
Amerícium |
Am |
95 |
2436 |
13,67 |
994±4 |
2607 |
133 |
Seaborg et al. |
1944 |
Antimon |
Sb |
51 |
121,75 |
6,61 |
630,74 |
1750 |
29 |
Early historic times |
- |
Arany |
Au |
79 |
196,9665 |
19,32 |
1064,43 |
2807 |
21 |
- |
- |
Argon |
Ar |
18 |
39,948 |
1,78374 |
-189,2 |
-185,7 |
8 |
Rayleigh and Ramsay |
1894 |
Arzén |
As |
33 |
74,9216 |
5,73 |
817 |
6135 |
14 |
Albertus Magnus |
1250? |
Asztácium |
At |
85 |
210 |
- |
302 |
337 |
21 |
Corson et al. |
1940 |
Bárium |
Ba |
56 |
137,34 |
3,5 |
725 |
1640 |
25 |
Davy |
1808 |
Berillium |
Be |
4 |
9,01218 |
1,848 |
1278±5 |
2970 |
6 |
Vauquelin |
1798 |
Berkélium |
Bk |
97 |
2476 |
14,007 |
- |
- |
83 |
Seaborg et al. |
1949 |
Bizmut |
Bi |
83 |
208,9806 |
9,747 |
271,3 |
1560±5 |
19 |
Geoffroy |
1753 |
Bór |
B |
5 |
10,81 |
2,378 |
2300 |
25505 |
6 |
Gay-Lussac
and |
1808 |
Bórium |
Bh |
107 |
262 |
- |
- |
- |
- |
Armbruster and Münzenberg |
1981 |
Bróm |
Br |
35 |
79,904 |
3,124 |
-7,2 |
58,78 |
19 |
Balard |
1826 |
Cérium |
Ce |
58 |
140,12 |
6,771 |
798±3 |
3257 |
19 |
Berzelius
and |
1803 |
Cézium |
Cs |
55 |
132,9055 |
1,873 |
28,40 |
678,4 |
22 |
Bunsen and Kirchoff |
1860 |
Cink |
Zn |
30 |
65,38 |
7,133 |
419,58 |
907 |
15 |
- |
- |
Cirkónium |
Zr |
40 |
91,22 |
6,5062 |
1852±2 |
4377 |
20 |
Klaproth |
1789 |
Diszprózium |
Dy |
66 |
162,50 |
8,540 |
1409 |
2335 |
21 |
Boisbaudran |
1886 |
Dubnium |
Db |
105 |
262 |
- |
- |
- |
- |
Ghiorso et al, |
1970 |
Einsteinium |
Es |
99 |
2546 |
- |
- |
- |
123 |
Ghiorso et al, |
1952 |
Erbium |
Er |
68 |
167,26 |
9,045 |
1522 |
2510 |
16 |
Mosander |
1843 |
Európium |
Eu |
63 |
151,96 |
5,283 |
822±5 |
1597 |
21 |
Demarcay |
1896 |
Ezüst |
Ag |
47 |
107,868 |
10,5 |
961,93 |
2212 |
27 |
- |
- |
Fermium |
Fm |
100 |
2576 |
- |
- |
- |
103 |
Ghiorso et al, |
1953 |
Fluor |
F |
9 |
18,9984 |
1,1084 |
-219,62 |
-188,14 |
6 |
Moissan |
1886 |
Foszfor (fehér) |
P |
15 |
30,9738 |
1,82 |
44,1 |
280 |
7 |
Brand |
1669 |
Francium |
Fr |
87 |
2236 |
- |
272 |
6772 |
21 |
Perey |
1938 |
Gadolínium |
Gd |
64 |
157,25 |
7,898 |
1311±1 |
3233 |
17 |
Marignac |
1880 |
Gallium |
Ga |
31 |
69,72 |
5,904 |
29,78 |
2403 |
14 |
Boisbaudran |
1875 |
Germánium |
Ge |
32 |
72,59 |
5,323 |
937,4 |
2830 |
17 |
Winkler |
1886 |
Hafnium |
Hf |
72 |
178,49 |
13,31 |
2227±20 |
4602 |
17 |
Coster and von Hevesy |
1923 |
Hassium |
Hs |
108 |
265 |
- |
- |
- |
- |
Armbruster and Münzenberg |
1983 |
Hélium |
He |
2 |
4,00260 |
0,17854 |
-272,2 |
-268,934 |
5 |
Janssen |
1868 |
Hidrogén |
H |
1 |
1,0080 |
0,0704 |
-259,14 |
-252,87 |
3 |
Cavendish |
1766 |
Higany |
Hg |
80 |
200,59 |
13,546 |
-38,87 |
356,58 |
26 |
- |
- |
Holmium |
Ho |
67 |
164,9303 |
8,781 |
1470 |
2720 |
29 |
Delafontaine and Soret |
1878 |
Indium |
In |
49 |
114,82 |
7,31 |
156,61 |
2080 |
34 |
Reich and Richter |
1863 |
Irídium |
Ir |
77 |
192,22 |
22,42 |
2410 |
4130 |
25 |
Tennant |
1803 |
Itterbium |
Yb |
70 |
173,04 |
6,972 |
824±5 |
1193 |
16 |
Marignac |
1878 |
Ittrium |
Y |
39 |
88,9059 |
4,457 |
1523±8 |
3337 |
21 |
Gadolin |
1794 |
Jód |
I |
53 |
126,9045 |
4,93 |
113,5 |
184,35 |
24 |
Cortois |
1811 |
Kadmium |
Cd |
48 |
112,40 |
8,65 |
320,9 |
765 |
22 |
Stromeyer |
1817 |
Kalcium |
Ca |
20 |
40,08 |
1,55 |
839±2 |
1484 |
14 |
Davy |
1808 |
Kalifornium |
Cf |
98 |
2516 |
- |
- |
- |
123 |
Seaborg et al. |
1950 |
Kálium |
K |
19 |
39,102 |
0,862 |
63,65 |
774 |
10 |
Davy |
1807 |
Kén |
S |
16 |
32,06 |
2,0711 |
112,8 |
444,674 |
10 |
- |
- |
Klór |
Cl |
17 |
35,453 |
1,564 |
-100,98 |
-34,6 |
11 |
Scheele |
1774 |
Kobalt |
Co |
27 |
58,9332 |
8,9 |
1495 |
2870 |
14 |
Brandt |
c,1735 |
Kripton |
Kr |
36 |
83,80 |
3,7334 |
-156,6 |
-152,30 ±0,10 |
23 |
Ramsay and Travers |
1898 |
Króm |
Cr |
24 |
51,996 |
7,18-7,20 |
1857±20 |
2672 |
9 |
Vauquelin |
1797 |
Kűrium |
Cm |
96 |
2476 |
13,512 |
1340±40 |
- |
133 |
Seaborg et al, |
1944 |
Lantán |
La |
57 |
138,9055 |
6,166 |
920±5 |
3454 |
19 |
Mosander |
1839 |
Laurencium |
Lr |
103 |
2576 |
- |
- |
- |
203 |
Ghiorso et al, |
1961 |
Lítium |
Li |
3 |
6,941 |
0,534 |
180,54 |
1347 |
5 |
Arfvedson |
1817 |
Lutécium |
Lu |
71 |
174,97 |
9,835 |
1656±5 |
3315 |
22 |
Urbain |
1907 |
Magnézium |
Mg |
12 |
24,305 |
1,738 |
648,8±0,5 |
1090 |
8 |
Black |
1755 |
Mangán |
Mn |
25 |
54,9380 |
7,21-7,4410 |
1244±3 |
1962 |
11 |
Gahn,
Scheele, and |
1774 |
Meitnerium |
Mt |
109 |
266 |
- |
- |
- |
- |
GSI, Darmstadt, West Germany |
1982 |
Mendelévium |
Md |
101 |
2566 |
- |
- |
- |
33 |
Ghiorso et al, |
1955 |
Molibdén |
Mo |
42 |
95,94 |
10,22 |
2617 |
4612 |
20 |
Scheele |
1778 |
Neodímium |
Nd |
60 |
144,24 |
6,80 & 7,00410 |
1010 |
3127 |
16 |
von Welsbach |
1885 |
Neon |
Ne |
10 |
20,179 |
0,89990 |
-248,67 |
-246,048 |
8 |
Ramsay and Travers |
1898 |
Neptúnium |
Np |
93 |
237,0482 |
20,25 |
6400±1 |
3902 |
153 |
McMillan and Abelson |
1940 |
Nátrium |
Na |
11 |
22,9898 |
0,971 |
97,81 ±0,03 |
882,9 |
7 |
Davy |
1807 |
Nikkel |
Ni |
28 |
58,71 |
8,902 |
1453 |
2732 |
11 |
Cronstedt |
1751 |
Nióbium |
Nb |
41 |
92,9064 |
8,57 |
2468±10 |
4742 |
24 |
Hatchett |
1801 |
Nitrogén |
N |
7 |
14,0067 |
0,8084 |
-209,86 |
-195,8 |
8 |
Rutherford |
1772 |
Nobélium |
No |
102 |
2546 |
- |
- |
- |
73 |
Ghiorso et al, |
1957 |
Ozmium |
Os |
76 |
190,2 |
22,57 |
3045±30 |
5027±100 |
19 |
Tennant |
1803 |
Oxigén |
O |
8 |
15,9994 |
1,144 |
-218,4 |
-182,962 |
8 |
Priestley |
1774 |
Ólom |
Pb |
82 |
207,2 |
11,35 |
327,502 |
1740 |
29 |
- |
- |
Ón (fehér) |
Sn |
50 |
118,69 |
7,31 |
231,9681 |
2270 |
28 |
- |
- |
Palládium |
Pd |
46 |
106,4 |
12,02 |
1552 |
3140 |
21 |
Wollaston |
1803 |
Platina |
Pt |
78 |
195,09 |
21,45 |
1772 |
3827±100 |
32 |
Ulloa |
1735 |
Plutónium |
Pu |
94 |
2446 |
19,84 |
641 |
3232 |
163 |
Seaborg et al, |
1940 |
Polónium |
Po |
84 |
2106 |
9,32 |
254 |
962 |
34 |
Curie |
1898 |
Prazeodímium |
Pr |
59 |
140,9077 |
6,772 |
931±4 |
3212 |
15 |
von Weisbach |
1885 |
Prométium |
Pm |
61 |
1456 |
- |
≈1080 |
2460 |
14 |
Marinsky et al, |
1945 |
Protaktínium |
Pa |
91 |
231,0359 |
15,372 |
<1600 |
- |
14 |
Hahn and Meitner |
1917 |
Radon |
Rn |
86 |
2226 |
4,44 |
-71 |
-61,8 |
20 |
Dorn |
1900 |
Rádium |
Ra |
88 |
226,0254 |
5,0? |
700 |
1140 |
15 |
Marie and Pierre Curie |
1898 |
Rénium |
Re |
75 |
186,2 |
21,02 |
3180 |
56277 |
21 |
Noddack, Berg, and Tacke |
1925 |
Réz |
Cu |
29 |
63,546 |
8,96 |
1083,4 ±0,2 |
2567 |
11 |
- |
- |
Ródium |
Rh |
45 |
102,9055 |
12,41 |
1966±3 |
3727±100 |
20 |
Wollaston |
1803 |
Rubídium |
Rb |
37 |
85,4678 |
1,532 |
38,89 |
688 |
20 |
Bunsen and Kirchoff |
1861 |
Ruténium |
Ru |
44 |
101,07 |
12,44 |
2310 |
3900 |
16 |
Klaus |
1844 |
Rutherfordium |
Rf |
104 |
261 |
- |
- |
- |
- |
Ghiorso et al, |
1969 |
Stroncium |
Sr |
38 |
87,62 |
2,54 |
769 |
1384 |
18 |
Davy |
1808 |
Szamárium |
Sm |
62 |
150,4 |
7,536 |
1072±5 |
1778 |
17 |
Boisbaudran |
1879 |
Seaborgium |
Sg |
106 |
263 |
- |
- |
- |
- |
Ghiorso et al, |
1974 |
Szelén |
Se |
34 |
78,96 |
4,79 |
217 |
684,9±1 |
20 |
Berzelius |
1817 |
Szén |
C |
6 |
12,011 |
1,8-3,59 |
3550 |
4827 |
7 |
- |
- |
Szilikon |
Si |
14 |
28,086 |
2,33 |
1410 |
2355 |
8 |
Berzelius |
1824 |
Szkandium |
Sc |
21 |
44,9559 |
2,989 |
1539 |
2832 |
15 |
Nilson |
1879 |
Tallium |
Tl |
81 |
204,37 |
11,85 |
303,5 |
1457±10 |
28 |
Crookes |
1861 |
Tantál |
Ta |
73 |
180,9479 |
16,654 |
2996 |
5425±100 |
19 |
Ekeberg |
1801 |
Technécium |
Tc |
43 |
98,062 |
11,502 |
2172 |
4877 |
23 |
Perrier and Segré |
1937 |
Tellúr |
Te |
52 |
127,60 |
6,24 |
449,5±0,3 |
989,8±3,8 |
29 |
von Reichenstein |
1782 |
Terbium |
Tb |
65 |
158,9254 |
8,234 |
1360±4 |
3041 |
24 |
Mosander |
1843 |
Titán |
Ti |
22 |
47,90 |
4,55 |
1660±10 |
3287 |
9 |
Gregor |
1791 |
Tórium |
Th |
90 |
232,0381 |
11,72 |
1750 |
4790 |
12 |
Berzelius |
1828 |
Túlium |
Tm |
69 |
168,9342 |
9,314 |
1545±15 |
1727 |
18 |
Cleve |
1879 |
Uránium |
U |
92 |
238,029 |
19,05 |
1132,3±0,8 |
3818 |
15 |
Peligot |
1841 |
Vanádium |
V |
23 |
50,9414 |
6,11 |
1890±10 |
3380 |
9 |
del Rio |
1801 |
Vas |
Fe |
26 |
55,847 |
7,894 |
1535 |
2750 |
10 |
- |
- |
Volfrám |
W |
74 |
183,85 |
19,3 |
3410±20 |
5660 |
22 |
J, and F, d'Elhuyar |
1783 |
Xenon |
Xe |
54 |
131,30 |
3,524 |
-111,9 |
-107,1±3 |
31 |
Ramsay and Travers |
1898 |