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Terbium

Saka Wikipédia Jawa, bauwarna mardika basa Jawa
65 gadoliniumterbiumdisprosium
-

Tb

Bk
Katrangan Umum Unsur
Jeneng, Lambang, Nomer atom terbium, Tb, 65
Dhèrèt kimia lantanida
Golongan, Periode, Blok n/a, 6, f
Panampilan silvery white
Massa atom 158.92535(2) g/mol
Konfigurasi elektron [Xe] 4f9 6s2
Cacahing èlèktron saben kulit 2, 8, 18, 27, 8, 2
Ciri-ciri fisik
Fase solid
Massa jenis (watara suhu kamar) 8.23 g/cm³
Massa jenis cair ing titik lebur 7.65 g/cm³
Titik lebur 1629 K
(1356 °C, 2473 °F)
Titik umob 3503 K
(3230 °C, 5846 °F)
Kalor peleburan 10.15 kJ/mol
Kalor panguapan 293 kJ/mol
Kapasitas kalor (25 °C) 28.91 J/(mol·K)
Tekanan uap
P/Pa 1 10 100 1 k 10 k 100 k
ing T/K 1789 1979 (2201) (2505) (2913) (3491)
Ciri-ciri atom
Struktur kristal hexagonal
Bilangan oksidasi 3, 4
(weakly basic oxide)
Elektronegativitas ? 1.2 (skala Pauling)
Energi ionisasi
(detil)
ke-1: 565.8 kJ/mol
ke-2: 1110 kJ/mol
ke-3: 2114 kJ/mol
Jari-jari atom 175 pm
Jari-jari atom (terhitung) 225 pm
Lain-lain
Sifat magnetik ferromagnetic
in dry ice [1]
Resistivitas elektris (r.t.) (α, poly)
1.150 µΩ·m
Konduktivitas termal (300 K) 11.1 W/(m·K)
Muai panas (r.t.) (α, poly)
10.3 µm/(m·K)
Kecepatan suara (pada wujud kawat) (20 °C) 2620 m/s
Modulus Young (α form) 55.7 GPa
Modulus rigiditas (α form) 22.1 GPa
Modulus ruah (α form) 38.7 GPa
Nisbah Poisson (α form) 0.261
Kakerasan Vickers 863 MPa
Kekerasan Brinell 677 MPa
Nomor CAS 7440-27-9
Isotop
iso NA waktu paruh DM DE (MeV) DP
157Tb syn 71 y ε 0.060 157Gd
158Tb syn 180 y ε 1.220 158Gd
β- 0.937 158Dy
159Tb 100% Tb stabil kanthi 94 neutron
Referensi

Terbium iku unsur kimia sajeroning tabel périodik kang duwé lambang Tb lan nomer atom 65.

Terbium awarna putih kapérakan, lan kagolong logam kang langka. Logal iki cukup empuk, lan bisa disigar nganggo péso biyasa. Pisanan tinemu déning ahli kimia Swèdhen, Carl Gustaf Mosander ing taun 1843.

Golongan → 1 2
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Période ↓
1 1
H

2
He
2 3
Li
4
Be


5
B
6
C
7
N
8
O
9
F
10
Ne
3 11
Na
12
Mg


13
Al
14
Si
15
P
16
S
17
Cl
18
Ar
4 19
K
20
Ca

21
Sc
22
Ti
23
V
24
Cr
25
Mn
26
Fe
27
Co
28
Ni
29
Cu
30
Zn
31
Ga
32
Ge
33
As
34
Se
35
Br
36
Kr
5 37
Rb
38
Sr

39
Y
40
Zr
41
Nb
42
Mo
43
Tc
44
Ru
45
Rh
46
Pd
47
Ag
48
Cd
49
In
50
Sn
51
Sb
52
Te
53
I
54
Xe
6 55
Cs
56
Ba
*
71
Lu
72
Hf
73
Ta
74
W
75
Re
76
Os
77
Ir
78
Pt
79
Au
80
Hg
81
Tl
82
Pb
83
Bi
84
Po
85
At
86
Rn
7 87
 Fr 
88
Ra
**
103
Lr
104
Rf
105
Db
106
Sg
107
Bh
108
Hs
109
Mt
110
Ds
111
Rg
112
Cn
113
Nh
114
Fl
115
Mc
116
Lv
117
Ts
118
Og

* Lantanida 57
La
58
Ce
59
Pr
60
Nd
61
Pm
62
Sm
63
Eu
64
Gd
65
Tb
66
Dy
67
Ho
68
Er
69
Tm
70
Yb
** Aktinida 89
Ac
90
Th
91
Pa
92
U
93
Np
94
Pu
95
Am
96
Cm
97
Bk
98
Cf
99
Es
100
Fm
101
Md
102
No
Seri Kimia saka Tabel Périodik
Logam alkali Alkali tanah Lantanida Aktinida Logam transisi
Logam Metaloid Nonlogam Halogen Gas mulia



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