鋇 (Ba)

一般特性

标志 Ba
原子序数 56
原子量 137.327
2 (碱土金属或铍族)
IIA (IUPAC), IIA (CAS)
Solid, Paramagnetic, Conductor, Alkaline Earth Metal, Metal, Stable, Natural
时期 6
s

物理性质

密度 3.5 g/cm3
原子体积 39.0 cm3/mole
原子半径 2.22 angstroms
共价半径 198 pm
Crust Abundance 0.034%
Crystal Structure Cubic: Body centered
Color Silver

能量

电负性 0.9 (鲍林标度)
电子亲和势 13.95 kJ/mol
第一电离能 508 kJ/mol
第2 Ionization Energy 965.2 kJ/mol
第3 Ionization Energy 3600 kJ/mol
比热容 0.204 J g−1 K−1
导热系数 18.4 W·m−1·K−1

电子与氧化

氧化态 2
每客电子 2 8 18 18 8 2
电子构型 [Xe] 6s2
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 6s2
轨道图
1s
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2s
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2p
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3s
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3p
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3d
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4s
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4p
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4d
↿⇂
↿⇂
↿⇂
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4f
 
 
 
 
 
 
 
5s
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5p
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5d
 
 
 
 
 
5f
 
 
 
 
 
 
 
6s
↿⇂
6p
 
 
 
6d
 
 
 
 
 
6f
 
 
 
 
 
 
 

Nuclear

放射性

媒体

鋇 (Ba)的波尔原子模型
鋇 (Ba)刘易斯点图
Description
Soft, slightly malleable, silvery-white metal.
Uses
Barite, or barium sulfate (BaSO4), when ground is used as a filter for rubber, plastics, and resins. It is insoluable in water and so is used in X-rays of the digestive system. Barium nitrate, Ba(NO3)2, burns brilliant green and is used in fireworks.
Sources
Found in barytine (BaSO4) and witherite (BaCO3), never found in pure form due to its reactivity. Must be stored under kerosene to remain pure.
Pronounciation (English)
BAR-i-em

翻译

Afrikaans Barium
Aragonese Bario
العربية باريوم
Armãneashte Bariumu
asturianu Bariu
azərbaycan dili Barium
български Барий
বাংলা বেরিয়াম
brezhoneg Bariom
bosanski Barij[um]
Byelorussian Барый
Cebuano Baryo
čeština Baryum
Chuvash Бари
Cymraeg Bari
dansk Barium
Deutsch Barium
Ελληνικά Βαριο
English Barium
esperanto Bario
español Bario
eesti Baarium
euskara Barioa
فارسی باریم
suomi Barium
føroyskt Barium
français Baryum
furlan Bari
West-Frysk Barium
Gaeilge Bairiam
Gàidhlig Bairiam
galego Bario
ગુજરાતી બેરિયમનો
Gaelg Baarium
Hakka Chinese Pi (鋇)
עברית בריום
हिन्दी बेरियम
hrvatski Barij
magyar Bárium
հայերեն Բարիում
Indonesia Barium
íslenska Barín
italiano Bario
日本語 バリウム
ქართული ბარიუმი
کٲشُر Bar
қазақ тілі Барий
한국어 바륨
Kurdish Baryûm
Komi Барий
kernewek Baryum
кыргызча Барий
Latin Barium
Lëtzebuergesch Barium
Lombard Bàri
lingála Balu
lietuvių Baris
latviešu Bārijs
Mari Барий
Maori Konu-okehu
македонски Бариум
മലയാളം ബേരിയം
монгол Бари
Мокшан Бари
Bahasa Melayu Barium
Malti Barju[m]
Nahuatl Bario
Nederlands Barium
norsk Barium
Occitan Bari
ирон Барий
polski Bar
português Bário
Runasimi Baryu
română Bariu
русский Барий
slovenčina Bárium
slovenščina Barij
Samoan Barimi
Samogitian Baris
shqip Barium
српски Баријум
Southern Sotho Bariamo
svenska Barium
Kiswahili Bari
தமிழ் பேரியம்
Tajik Барий
ไทย แบเรียม
Türkçe Baryum
ئۇيغۇرچە بارىي
українська Барій
o‘zbek Bariy
Tiếng Việt Bari
Võro Baarium
中文

历史

发现地为
1808
发现人为
Sir Humphrey Davy
发现地为
England
词的起源
From the Greek word "barys" meaning "heavy"