No. |
|
Atomic
Weight |
Name |
Sym. |
M.P.
( °C ) |
B.P.
( °C ) |
Density*
(g/cm3) |
Earth
crust (%)* |
Discovery
(Year) |
Group* |
Electron
configuration |
Ionization
energy (eV) |
001 |
|
1.0079 |
|
H |
-259 |
-253 |
0.09 |
0.14 |
1776 |
1 |
1s1 |
13.5984 |
002 |
|
4.0026 |
|
He |
-272 |
-269 |
0.18 |
|
1895 |
18 |
1s2 |
24.5874 |
003 |
|
6.941 |
|
Li |
180 |
1347 |
0.53 |
|
1817 |
1 |
[He] 2s1 |
5.3917 |
004 |
|
9.0122 |
|
Be |
1278 |
2970 |
1.85 |
|
1797 |
2 |
[He] 2s2 |
9.3227 |
005 |
|
10.811 |
|
B |
2300 |
2550 |
2.34 |
|
1808 |
13 |
[He] 2s2 2p1 |
8.298 |
006 |
|
12.0107 |
|
C |
3500 |
4827 |
2.26 |
0.094 |
ancient |
14 |
[He] 2s2 2p2 |
11.2603 |
007 |
|
14.0067 |
|
N |
-210 |
-196 |
1.25 |
|
1772 |
15 |
[He] 2s2 2p3 |
14.5341 |
008 |
|
15.9994 |
|
O |
-218 |
-183 |
1.43 |
46.71 |
1774 |
16 |
[He] 2s2 2p4 |
13.6181 |
009 |
|
18.9984 |
|
F |
-220 |
-188 |
1.7 |
0.029 |
1886 |
17 |
[He] 2s2 2p5 |
17.4228 |
010 |
|
20.1797 |
|
Ne |
-249 |
-246 |
0.9 |
|
1898 |
18 |
[He] 2s2 2p6 |
21.5645 |
011 |
|
22.9897 |
|
Na |
98 |
883 |
0.97 |
2.75 |
1807 |
1 |
[Ne] 3s1 |
5.1391 |
012 |
|
24.305 |
|
Mg |
639 |
1090 |
1.74 |
2.08 |
1755 |
2 |
[Ne] 3s2 |
7.6462 |
013 |
|
26.9815 |
|
Al |
660 |
2467 |
2.7 |
8.07 |
1825 |
13 |
[Ne] 3s2 3p1 |
5.9858 |
014 |
|
28.0855 |
|
Si |
1410 |
2355 |
2.33 |
27.69 |
1824 |
14 |
[Ne] 3s2 3p2 |
8.1517 |
015 |
|
30.9738 |
|
P |
44 |
280 |
1.82 |
0.13 |
1669 |
15 |
[Ne] 3s2 3p3 |
10.4867 |
016 |
|
32.065 |
|
S |
113 |
445 |
2.07 |
0.052 |
ancient |
16 |
[Ne] 3s2 3p4 |
10.36 |
017 |
|
35.453 |
|
Cl |
-101 |
-35 |
3.21 |
0.045 |
1774 |
17 |
[Ne] 3s2 3p5 |
12.9676 |
018 |
|
39.948 |
|
Ar |
-189 |
-186 |
1.78 |
|
1894 |
18 |
[Ne] 3s2 3p6 |
15.7596 |
019 |
|
39.0983 |
|
K |
64 |
774 |
0.86 |
2.58 |
1807 |
1 |
[Ar] 4s1 |
4.3407 |
020 |
|
40.078 |
|
Ca |
839 |
1484 |
1.55 |
3.65 |
1808 |
2 |
[Ar] 4s2 |
6.1132 |
021 |
|
44.9559 |
|
Sc |
1539 |
2832 |
2.99 |
|
1879 |
3 |
[Ar] 3d1 4s2 |
6.5615 |
022 |
|
47.867 |
|
Ti |
1660 |
3287 |
4.54 |
0.62 |
1791 |
4 |
[Ar] 3d2 4s2 |
6.8281 |
023 |
|
50.9415 |
|
V |
1890 |
3380 |
6.11 |
|
1830 |
5 |
[Ar] 3d3 4s2 |
6.7462 |
024 |
|
51.9961 |
|
Cr |
1857 |
2672 |
7.19 |
0.035 |
1797 |
6 |
[Ar] 3d5 4s1 |
6.7665 |
025 |
|
54.938 |
|
Mn |
1245 |
1962 |
7.43 |
0.09 |
1774 |
7 |
[Ar] 3d5 4s2 |
7.434 |
026 |
|
55.845 |
|
Fe |
1535 |
2750 |
7.87 |
5.05 |
ancient |
8 |
[Ar] 3d6 4s2 |
7.9024 |
027 |
|
58.9332 |
|
Co |
1495 |
2870 |
8.9 |
|
1735 |
9 |
[Ar] 3d7 4s2 |
7.881 |
028 |
|
58.6934 |
|
Ni |
1453 |
2732 |
8.9 |
0.019 |
1751 |
10 |
[Ar] 3d8 4s2 |
7.6398 |
029 |
|
63.546 |
|
Cu |
1083 |
2567 |
8.96 |
|
ancient |
11 |
[Ar] 3d10 4s1 |
7.7264 |
030 |
|
65.39 |
|
Zn |
420 |
907 |
7.13 |
|
ancient |
12 |
[Ar] 3d10 4s2 |
9.3942 |
031 |
|
69.723 |
|
Ga |
30 |
2403 |
5.91 |
|
1875 |
13 |
[Ar] 3d10 4s2
4p1 |
5.9993 |
032 |
|
72.64 |
|
Ge |
937 |
2830 |
5.32 |
|
1886 |
14 |
[Ar] 3d10 4s2
4p2 |
7.8994 |
033 |
|
74.9216 |
|
As |
81 |
613 |
5.72 |
|
ancient |
15 |
[Ar] 3d10 4s2
4p3 |
9.7886 |
034 |
|
78.96 |
|
Se |
217 |
685 |
4.79 |
|
1817 |
16 |
[Ar] 3d10 4s2
4p4 |
9.7524 |
035 |
|
79.904 |
|
Br |
-7 |
59 |
3.12 |
|
1826 |
17 |
[Ar] 3d10 4s2
4p5 |
11.8138 |
036 |
|
83.8 |
|
Kr |
-157 |
-153 |
3.75 |
|
1898 |
18 |
[Ar] 3d10 4s2
4p6 |
13.9996 |
037 |
|
85.4678 |
|
Rb |
39 |
688 |
1.63 |
|
1861 |
1 |
[Kr] 5s1 |
4.1771 |
038 |
|
87.62 |
|
Sr |
769 |
1384 |
2.54 |
|
1790 |
2 |
[Kr] 5s2 |
5.6949 |
039 |
|
88.9059 |
|
Y |
1523 |
3337 |
4.47 |
|
1794 |
3 |
[Kr] 4d1 5s2 |
6.2173 |
040 |
|
91.224 |
|
Zr |
1852 |
4377 |
6.51 |
0.025 |
1789 |
4 |
[Kr] 4d2 5s2 |
6.6339 |
041 |
|
92.9064 |
|
Nb |
2468 |
4927 |
8.57 |
|
1801 |
5 |
[Kr] 4d4 5s1 |
6.7589 |
042 |
|
95.94 |
|
Mo |
2617 |
4612 |
10.22 |
|
1781 |
6 |
[Kr] 4d5 5s1 |
7.0924 |
043 |
* |
98 |
|
Tc |
2200 |
4877 |
11.5 |
|
1937 |
7 |
[Kr] 4d5 5s2 |
7.28 |
044 |
|
101.07 |
|
Ru |
2250 |
3900 |
12.37 |
|
1844 |
8 |
[Kr] 4d7 5s1 |
7.3605 |
045 |
|
102.9055 |
|
Rh |
1966 |
3727 |
12.41 |
|
1803 |
9 |
[Kr] 4d8 5s1 |
7.4589 |
046 |
|
106.42 |
|
Pd |
1552 |
2927 |
12.02 |
|
1803 |
10 |
[Kr] 4d10 |
8.3369 |
047 |
|
107.8682 |
|
Ag |
962 |
2212 |
10.5 |
|
ancient |
11 |
[Kr] 4d10 5s1 |
7.5762 |
048 |
|
112.411 |
|
Cd |
321 |
765 |
8.65 |
|
1817 |
12 |
[Kr] 4d10 5s2 |
8.9938 |
049 |
|
114.818 |
|
In |
157 |
2000 |
7.31 |
|
1863 |
13 |
[Kr] 4d10 5s2
5p1 |
5.7864 |
050 |
|
118.71 |
|
Sn |
232 |
2270 |
7.31 |
|
ancient |
14 |
[Kr] 4d10 5s2
5p2 |
7.3439 |
051 |
|
121.76 |
|
Sb |
630 |
1750 |
6.68 |
|
ancient |
15 |
[Kr] 4d10 5s2
5p3 |
8.6084 |
052 |
|
127.6 |
|
Te |
449 |
990 |
6.24 |
|
1783 |
16 |
[Kr] 4d10 5s2
5p4 |
9.0096 |
053 |
|
126.9045 |
|
I |
114 |
184 |
4.93 |
|
1811 |
17 |
[Kr] 4d10 5s2
5p5 |
10.4513 |
054 |
|
131.293 |
|
Xe |
-112 |
-108 |
5.9 |
|
1898 |
18 |
[Kr] 4d10 5s2
5p6 |
12.1298 |
055 |
|
132.9055 |
|
Cs |
29 |
678 |
1.87 |
|
1860 |
1 |
[Xe] 6s1 |
3.8939 |
056 |
|
137.327 |
|
Ba |
725 |
1140 |
3.59 |
0.05 |
1808 |
2 |
[Xe] 6s2 |
5.2117 |
057 |
|
138.9055 |
|
La |
920 |
3469 |
6.15 |
|
1839 |
3 |
[Xe] 5d1 6s2 |
5.5769 |
058 |
|
140.116 |
|
Ce |
795 |
3257 |
6.77 |
|
1803 |
101 |
[Xe] 4f1 5d1
6s2 |
5.5387 |
059 |
|
140.9077 |
|
Pr |
935 |
3127 |
6.77 |
|
1885 |
101 |
[Xe] 4f3 6s2 |
5.473 |
060 |
|
144.24 |
|
Nd |
1010 |
3127 |
7.01 |
|
1885 |
101 |
[Xe] 4f4 6s2 |
5.525 |
061 |
* |
145 |
|
Pm |
1100 |
3000 |
7.3 |
|
1945 |
101 |
[Xe] 4f5 6s2 |
5.582 |
062 |
|
150.36 |
|
Sm |
1072 |
1900 |
7.52 |
|
1879 |
101 |
[Xe] 4f6 6s2 |
5.6437 |
063 |
|
151.964 |
|
Eu |
822 |
1597 |
5.24 |
|
1901 |
101 |
[Xe] 4f7 6s2 |
5.6704 |
064 |
|
157.25 |
|
Gd |
1311 |
3233 |
7.9 |
|
1880 |
101 |
[Xe] 4f7 5d1
6s2 |
6.1501 |
065 |
|
158.9253 |
|
Tb |
1360 |
3041 |
8.23 |
|
1843 |
101 |
[Xe] 4f9 6s2 |
5.8638 |
066 |
|
162.5 |
|
Dy |
1412 |
2562 |
8.55 |
|
1886 |
101 |
[Xe] 4f10 6s2 |
5.9389 |
067 |
|
164.9303 |
|
Ho |
1470 |
2720 |
8.8 |
|
1867 |
101 |
[Xe] 4f11 6s2 |
6.0215 |
068 |
|
167.259 |
|
Er |
1522 |
2510 |
9.07 |
|
1842 |
101 |
[Xe] 4f12 6s2 |
6.1077 |
069 |
|
168.9342 |
|
Tm |
1545 |
1727 |
9.32 |
|
1879 |
101 |
[Xe] 4f13 6s2 |
6.1843 |
070 |
|
173.04 |
|
Yb |
824 |
1466 |
6.9 |
|
1878 |
101 |
[Xe] 4f14 6s2 |
6.2542 |
071 |
|
174.967 |
|
Lu |
1656 |
3315 |
9.84 |
|
1907 |
101 |
[Xe] 4f14 5d1
6s2 |
5.4259 |
072 |
|
178.49 |
|
Hf |
2150 |
5400 |
13.31 |
|
1923 |
4 |
[Xe] 4f14 5d2
6s2 |
6.8251 |
073 |
|
180.9479 |
|
Ta |
2996 |
5425 |
16.65 |
|
1802 |
5 |
[Xe] 4f14 5d3
6s2 |
7.5496 |
074 |
|
183.84 |
|
W |
3410 |
5660 |
19.35 |
|
1783 |
6 |
[Xe] 4f14 5d4
6s2 |
7.864 |
075 |
|
186.207 |
|
Re |
3180 |
5627 |
21.04 |
|
1925 |
7 |
[Xe] 4f14 5d5
6s2 |
7.8335 |
076 |
|
190.23 |
|
Os |
3045 |
5027 |
22.6 |
|
1803 |
8 |
[Xe] 4f14 5d6
6s2 |
8.4382 |
077 |
|
192.217 |
|
Ir |
2410 |
4527 |
22.4 |
|
1803 |
9 |
[Xe] 4f14 5d7
6s2 |
8.967 |
078 |
|
195.078 |
|
Pt |
1772 |
3827 |
21.45 |
|
1735 |
10 |
[Xe] 4f14 5d9
6s1 |
8.9587 |
079 |
|
196.9665 |
|
Au |
1064 |
2807 |
19.32 |
|
ancient |
11 |
[Xe] 4f14 5d10
6s1 |
9.2255 |
080 |
|
200.59 |
|
Hg |
-39 |
357 |
13.55 |
|
ancient |
12 |
[Xe] 4f14 5d10
6s2 |
10.4375 |
081 |
|
204.3833 |
|
Tl |
303 |
1457 |
11.85 |
|
1861 |
13 |
[Xe] 4f14 5d10
6s2 6p1 |
6.1082 |
082 |
|
207.2 |
|
Pb |
327 |
1740 |
11.35 |
|
ancient |
14 |
[Xe] 4f14 5d10
6s2 6p2 |
7.4167 |
083 |
|
208.9804 |
|
Bi |
271 |
1560 |
9.75 |
|
ancient |
15 |
[Xe] 4f14 5d10
6s2 6p3 |
7.2856 |
084 |
* |
209 |
|
Po |
254 |
962 |
9.3 |
|
1898 |
16 |
[Xe] 4f14 5d10
6s2 6p4 |
8.417 |
085 |
* |
210 |
|
At |
302 |
337 |
|
|
1940 |
17 |
[Xe] 4f14 5d10
6s2 6p5 |
9.3 |
086 |
* |
222 |
|
Rn |
-71 |
-62 |
9.73 |
|
1900 |
18 |
[Xe] 4f14 5d10
6s2 6p6 |
10.7485 |
087 |
* |
223 |
|
Fr |
27 |
677 |
|
|
1939 |
1 |
[Rn] 7s1 |
4.0727 |
088 |
* |
226 |
|
Ra |
700 |
1737 |
5.5 |
|
1898 |
2 |
[Rn] 7s2 |
5.2784 |
089 |
* |
227 |
|
Ac |
1050 |
3200 |
10.07 |
|
1899 |
3 |
[Rn] 6d1 7s2 |
5.17 |
090 |
|
232.0381 |
|
Th |
1750 |
4790 |
11.72 |
|
1829 |
102 |
[Rn] 6d2 7s2 |
6.3067 |
091 |
|
231.0359 |
|
Pa |
1568 |
|
15.4 |
|
1913 |
102 |
[Rn] 5f2 6d1
7s2 |
5.89 |
092 |
|
238.0289 |
|
U |
1132 |
3818 |
18.95 |
|
1789 |
102 |
[Rn] 5f3 6d1
7s2 |
6.1941 |
093 |
* |
237 |
|
Np |
640 |
3902 |
20.2 |
|
1940 |
102 |
[Rn] 5f4 6d1
7s2 |
6.2657 |
094 |
* |
244 |
|
Pu |
640 |
3235 |
19.84 |
|
1940 |
102 |
[Rn] 5f6 7s2 |
6.0262 |
095 |
* |
243 |
|
Am |
994 |
2607 |
13.67 |
|
1944 |
102 |
[Rn] 5f7 7s2 |
5.9738 |
096 |
* |
247 |
|
Cm |
1340 |
|
13.5 |
|
1944 |
102 |
|
5.9915 |
097 |
* |
247 |
|
Bk |
986 |
|
14.78 |
|
1949 |
102 |
|
6.1979 |
098 |
* |
251 |
|
Cf |
900 |
|
15.1 |
|
1950 |
102 |
|
6.2817 |
099 |
* |
252 |
|
Es |
860 |
|
|
|
1952 |
102 |
|
6.42 |
100 |
* |
257 |
|
Fm |
1527 |
|
|
|
1952 |
102 |
|
6.5 |
101 |
* |
258 |
|
Md |
|
|
|
|
1955 |
102 |
|
6.58 |
102 |
* |
259 |
|
No |
827 |
|
|
|
1958 |
102 |
|
6.65 |
103 |
* |
262 |
|
Lr |
1627 |
|
|
|
1961 |
102 |
|
4.9 |
104 |
* |
261 |
|
Rf |
|
|
|
|
1964 |
4 |
|
|
105 |
* |
262 |
|
Db |
|
|
|
|
1967 |
5 |
|
|
106 |
* |
266 |
|
Sg |
|
|
|
|
1974 |
6 |
|
|
107 |
* |
264 |
|
Bh |
|
|
|
|
1981 |
7 |
|
|
108 |
* |
277 |
|
Hs |
|
|
|
|
1984 |
8 |
|
|
109 |
* |
268 |
|
Mt |
|
|
|
|
1982 |
9 |
|
|
110 |
|
|
|
Ds |
|
|
|
|
|
|
|
|
111 |
|
|
|
Rg |
|
|
|
|
|
|
|
|
112 |
|
|
|
Uub |
|
|
|
|
|
|
|
|
113 |
|
|
|
Uut |
|
|
|
|
|
|
|
|
114 |
|
|
|
Uuq |
|
|
|
|
|
|
|
|
115 |
|
|
|
Uup |
|
|
|
|
|
|
|
|
116 |
|
|
|
Uuh |
|
|
|
|
|
|
|
|
117 |
|
|
|
Uus |
|
|
|
|
|
|
|
|
118 |
|
|
|
Uuo |
|
|
|
|
|
|
|
|
No. |
|
Atomic
Weight |
Name |
Sym. |
M.P.
( °C ) |
B.P.
( °C ) |
Density*
(g/cm3) |
Earth
crust (%)* |
Discovery
(Year) |
Group* |
Electron
configuration |
Ionization
energy (eV) |
|