A |
Symbol pierwiastka |
Masa atomowa |
Liczby masowe izotopów |
68 |
Er |
167,26 |
166, 168, 167, 170, 164, 162 |
69 |
Tm |
168,934 |
169 (100) |
70 |
Yb |
173,04 |
174, 172, 173, 171, 176, 168 |
71 |
Lu |
174,97 |
175 (97,40), 176 (2,60) |
72 |
Hf |
178,49 |
180, 178, 177, 179, 176, 174 |
73 |
Ta |
180,948 |
181 (99,99), 180 (0,01) |
74 |
W |
183,85 |
184, 186, 182, 183 180 |
75 |
Re |
186 2 |
187 (62,93), 185 (37, 07) |
76 |
Os |
190,2 |
192, 190, 189, 187, 186, 184 |
77 |
Ir |
192,22 |
193 (61,5), 191 (38,5) |
78 |
Pt |
195,09 |
195, 194, 196, 198, 192, 190 |
79 |
Au |
196,967 |
197 (100) |
80 |
Hg |
200,59 |
202, 200, 199, 201, 198, 204, 198 |
81 |
Tl |
204,37 |
205, 203—206, 207, 208, 210 |
82 |
Pb |
207,23 |
208, 206, 207, 204—210, 211, 212, 214 |
83 |
Bi |
208,98 |
209 (100)—211, 212, 214, 215 |
84 |
Po |
209 |
210, 211, 212, 214, 215, 216, 218 |
85 |
At |
210 |
215, 216, 218, 219 |
86 |
Rn |
222 |
219, 220, 222 |
87 |
Fr |
223 |
223 |
88 |
Ra |
226,02 |
223, 224, 226, 228 |
89 |
Ac |
227 |
227, 228 |
90 |
Th |
232,038 |
235 (100)—227, 228, 230, 231, 234 |
91 |
Pa |
231,03 |
231 (100), 234 |
92 |
U |
238,02 |
238 (99,28), 235 (0,71), 234 (0,006) |
Rozmieszczenie elektronów w atomach wszystkich pierwiastków
Nazwa pierwiastka |
Liczba atomowa |
Symbol |
Rozmieszczenie elektronów (stan podstawowy) |
wodór |
1 |
H |
ls1 |
hel |
2 |
He |
ls2 |
lit |
3 |
Li |
(He) 2S1 |
beryl |
4 |
Be |
(He) 2s2 |
bor |
5 |
B |
(He) 2s22pJ |
węgiel |
6 |
C |
(He) 2s22p2 |
azot |
■ 7 |
N |
(He) 2s22p3 |
tlen |
8 |
O |
(He) 2s22p4 |
fluor |
9 |
F |
(He) 2s22p5 |
neon |
10 |
Ne |
(He) 2s22p6 |
sód |
11 |
Na |
(Ne) 3S1 |
magnez |
12 |
Mg |
.(Ne) 3s2 |
glin |
13 |
Al |
(Ne) 3s23p‘ |
krzem |
14 |
Si |
(Ne) 3s23p2 |
fosfor |
15 |
P |
(Ne) 3s23p3 |
siarka |
16 |
S |
(Ne) 3s23p4 |
chlor |
17 |
Cl |
(Ne) 3s23p5 |
argon |
18 |
Ar |
(Ne) 3s23p6 |
potas |
19 ' |
K |
(Ar) 4S1 |
wapń |
20 |
Ca |
(Ar) 4s2 |
skand |
21 |
Sc |
(Ar) 3da 4s2 |
tytan |
22 |
Ti |
(Ar) 3d2 4s2 |
wan ad |
23 |
V |
(Ar) 3d3 4s2 |
chrom |
24 |
Cr |
(Ar) 3ds 4s‘ |
mangan |
25 |
Mn |
(Ar) 3d5 4s2 |
żelazo |
26 |
Fe |
(Ar) 3d6 4s2 |
kobalt |
27 |
Co |
(Ar) 3d7 4s2 |
nikiel |
28 |
Ni |
(Ar) 3d8 4s2 |
miedź |
29 |
Cu |
(Ar) 3d10 4S1 |
cynk |
30 |
Zn |
(Ar) 3d10 4s2 |
gal |
31 |
Ga |
(Ar) 3d10 4s24p! |
german |
32 |
Ge |
(Ar) 3d10 4s24p2 |
arsen |
33 |
As |
(Ar) 3d10 4s24p3 |
selen |
34 |
Se |
(Ar) 3d10 4s24p4 |
brom |
35 |
Br |
(Ar) 3d10 4s24p5 |
krypton |
36 |
Kr |
(Ar) 3d10 4s24p5 |
rubid |
37 |
Rb |
(Kr) 5S1 |
Stront |
38 |
Sr |
(Kr) 5s2 |
115