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Hafnium

Saka Wikipédia Jawa, bauwarna mardika basa Jawa
72 lutetiumhafniumtantalum
Zr

Hf

Rf
Katrangan Umum Unsur
Jeneng, Lambang, Nomer atom hafnium, Hf, 72
Dhèrèt kimia transition metals
Golongan, Période, Blok 4, 6, d
Panampilan steel grey
Massa atom 178.49(2) g/mol
Konfigurasi elektron [Xe] 4f14 5d2 6s2
Cacahing èlèktron saben kulit 2, 8, 18, 32, 10, 2
Ciri-ciri fisik
Fase solid
Massa jenis (watara suhu kamar) 13.31 g/cm³
Massa jenis cair ing titik lebur 12 g/cm³
Titik lebur 2506 K
(2233 °C, 4051 °F)
Titik umob 4876 K
(4603 °C, 8317 °F)
Kalor peleburan 27.2 kJ/mol
Kalor panguapan 571 kJ/mol
Kapasitas kalor (25 °C) 25.73 J/(mol·K)
Tekanan uap
P/Pa 1 10 100 1 k 10 k 100 k
ing T/K 2689 2954 3277 3679 4194 4876
Ciri-ciri atom
Struktur kristal hexagonal
Bilangan oksidasi 4
(amphoteric oxide)
Elektronegativitas 1.3 (skala Pauling)
Energi ionisasi
(detil)
ke-1: 658.5 kJ/mol
ke-2: 1440 kJ/mol
ke-3: 2250 kJ/mol
Jari-jari atom 155 pm
Jari-jari atom (terhitung) 208 pm
Jari-jari kovalen 150 pm
Lain-lain
Sifat magnetik no data
Resistivitas listrik (20 °C) 331 nΩ·m
Konduktivitas termal (300 K) 23.0 W/(m·K)
Ekspansi termal (25 °C) 5.9 µm/(m·K)
Kecepatan suara (pada wujud kawat) (20 °C) 3010 m/s
Modulus Young 78 GPa
Modulus rigiditas 30 GPa
Modulus ruah 110 GPa
Nisbah Poisson 0.37
Skala Mohs 5.5
Kakerasan Vickers 1760 MPa
Kekerasan Brinell 1700 MPa
Nomor CAS 7440-58-6
Isotop
iso NA waktu paruh DM DE (MeV) DP
172Hf syn 1.87 y ε 0.350 172Lu
174Hf 0.162% 2×1015 y α 2.495 170Yb
176Hf 5.206% Hf stabil kanthi 104 neutron
177Hf 18.606% Hf stabil kanthi 105 neutron
178Hf 27.297% Hf stabil kanthi 106 neutron
178m2Hf syn 31 y IT 2.446 178Hf
179Hf 13.629% Hf stabil kanthi 107 neutron
180Hf 35.1% Hf stabil kanthi 108 neutron
182Hf syn 9×106 y β 0.373 182Ta
Referensi

Hafnium (uniné /ˈhæfniəm/) iku unsur kimia kanthi simbul Hf lan nomer atom 72.

Pranala njaba

[besut | besut sumber]
Wiktionary
Wiktionary
Pirsani informasi ngenani Hafnium ing KamusWiki.
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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