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Barium - Wikipedia

Barium

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56 caesiumbariumlanthanum
Sr

Ba

Ra
Katrangan Umum Unsur
Jeneng, Lambang, Nomer atom barium, Ba, 56
Dhèrèt kimia alkaline earth metals
Golongan, Période, Blok 2, 6, s
Panampilan silvery white
Massa atom 137.327(7) g/mol
Konfigurasi elektron [Xe] 6s2
Cacahing èlèktron saben kulit 2, 8, 18, 18, 8, 2
Ciri-ciri fisik
Fase solid
Massa jenis (watara suhu kamar) 3.51 g/cm³
Massa jenis cair ing titik lebur 3.338 g/cm³
Titik lebur 1000 K
(727 °C, 1341 °F)
Titik umob 2170 K
(1897 °C, 3447 °F)
Kalor peleburan 7.12 kJ/mol
Kalor panguapan 140.3 kJ/mol
Kapasitas kalor (25 °C) 28.07 J/(mol·K)
Tekanan uap
P/Pa 1 10 100 1 k 10 k 100 k
ing T/K 911 1038 1185 1388 1686 2170
Ciri-ciri atom
Struktur kristal cubic body centered
Bilangan oksidasi 2
(strongly basic oxide)
Elektronegativitas 0.89 (skala Pauling)
Energi ionisasi pertama: 502.9 kJ/mol
ke-2: 965.2 kJ/mol
ke-3: 3600 kJ/mol
Jari-jari atom 215 pm
Jari-jari atom (terhitung) 253 pm
Jari-jari kovalen 198 pm
Lain-lain
Sifat magnetik paramagnetic
Resistivitas listrik (20 °C) 332 nΩ·m
Konduktivitas termal (300 K) 18.4 W/(m·K)
Ekspansi termal (25 °C) 20.6 µm/(m·K)
Kecepatan suara (pada wujud kawat) (20 °C) 1620 m/s
Modulus Young 13 GPa
Modulus rigiditas 4.9 GPa
Modulus ruah 9.6 GPa
Skala Mohs 1.25
Nomor CAS 7440-39-3
Isotop
iso NA waktu paruh DM DE (MeV) DP
130Ba 0.106% Ba stabil kanthi 74 neutron
132Ba 0.101% Ba stabil kanthi 76 neutron
133Ba syn 10.51 y ε 0.517 133Cs
134Ba 2.417% Ba stabil kanthi 78 neutron
135Ba 6.592% Ba stabil kanthi 79 neutron
136Ba 7.854% Ba stabil kanthi 80 neutron
137Ba 11.23% Ba stabil kanthi 81 neutron
138Ba 71.7% Ba stabil kanthi 82 neutron
Referensi

Barium yakuwi sawijining unsur kimia jroning tabel périodik kang nduwèni lambang Ba lan nomer atom 56.



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
Uuu
112
Uub
113
Uut
114
Uuq
115
Uup
116
Uuh
117
Uus
118
Uuo

* 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


aa - ab - af - ak - als - am - an - ang - ar - arc - as - ast - av - ay - az - ba - bar - bat_smg - bcl - be - be_x_old - bg - bh - bi - bm - bn - bo - bpy - br - bs - bug - bxr - ca - cbk_zam - cdo - ce - ceb - ch - cho - chr - chy - co - cr - crh - cs - csb - cu - cv - cy - da - de - diq - dsb - dv - dz - ee - el - eml - en - eo - es - et - eu - ext - fa - ff - fi - fiu_vro - fj - fo - fr - frp - fur - fy - ga - gan - gd - gl - glk - gn - got - gu - gv - ha - hak - haw - he - hi - hif - ho - hr - hsb - ht - hu - hy - hz - ia - id - ie - ig - ii - ik - ilo - io - is - it - iu - ja - jbo - jv - ka - kaa - kab - kg - ki - kj - kk - kl - km - kn - ko - kr - ks - ksh - ku - kv - kw - ky - la - lad - lb - lbe - lg - li - lij - lmo - ln - lo - lt - lv - map_bms - mdf - mg - mh - mi - mk - ml - mn - mo - mr - mt - mus - my - myv - mzn - na - nah - nap - nds - nds_nl - ne - new - ng - nl - nn - no - nov - nrm - nv - ny - oc - om - or - os - pa - pag - pam - pap - pdc - pi - pih - pl - pms - ps - pt - qu - quality - rm - rmy - rn - ro - roa_rup - roa_tara - ru - rw - sa - sah - sc - scn - sco - sd - se - sg - sh - si - simple - sk - sl - sm - sn - so - sr - srn - ss - st - stq - su - sv - sw - szl - ta - te - tet - tg - th - ti - tk - tl - tlh - tn - to - tpi - tr - ts - tt - tum - tw - ty - udm - ug - uk - ur - uz - ve - vec - vi - vls - vo - wa - war - wo - wuu - xal - xh - yi - yo - za - zea - zh - zh_classical - zh_min_nan - zh_yue - zu -