特性

CAS Number7440-57-5
PubChem CID23985
原子半径144
モル体積10.2
原子量196.967
ブロックd
沸点2,856
Bulk Modulus
カテゴリ遷移元素
結晶構造面心立方格子
金色
共有結合半径136
密度19.282
Electrical Resistivity
電子配置[Xe] 4f14 5d10 6s1
電子殻2, 8, 18, 32, 18, 1
電気陰性度2.54
Electrons79
11
融解熱12.5
蒸発熱330
イオン化エネルギー9.226
Magnetic Ordering
Magnetic Susceptibility
質量196.967
Mass Number79
融点1,064.2
名称
中性子118
原子番号197
酸化数-1, 1, 2, 3, 5
周期6
固体
Poisson Ratio
陽子79
Shear Modulus
熱容量0.129
記号Au
熱伝導率3.17
Van der Waals radius
Young's Modulus
天然存在比
地殻中における存在比3.1×10-7%
宇宙空間における存在比6×10-8%
Au 金 79 196.966569 11 6 d 79 1064.0 3080.0 [Xe] 4f14 5d10 6s1 2 8 18 32 18 1 19.3 3.1E-7% Gold Cubic: Face centered 2.5 1.92 {"1":"890.1","2":"1980"} 890 222.8 +3,1 1.46 10.2 12.36 324.43 0.128 317.0 0 Solid, Diamagnetic, Conductor, TransitionMetal, Metal, Stable, Natural GOLD Soft, malleable, bright yellow metal. Very malleable. Used in electronics, jewelry and coins. It is a good reflector of infrared radiation, so a thin film of gold is applied to the glass of skyscrapers to reduce internal heating from sunlight. Found in veins in the crust, with cooper ore and native . 3OoLHe-4aNA Gold
Gadolinium was first detected spectroscopically in 1880 by the Swiss chemist Jean Charles Galissard de Marignac who separated its oxide.

He observed spectroscopic lines due to gadolinium in samples of gadolinite and in the separate mineral cerite.

The metal was isolated by Paul Emile Lecoq de Boisbaudran in 1886. From gadolinite, a mineral named for Gadolin, a Finnish chemist 79 From the Anglo-Saxon word "gold" (the origin of the symbol Au is the Latin word "aurum" meaning "gold")

ガドリニウムの同位体

Standard Atomic Weight

196.966569(5)

安定同位体

197Au

不安定同位体

169Au 170Au 171Au 172Au 173Au 174Au 175Au 176Au 177Au 178Au 179Au 180Au 181Au 182Au 183Au 184Au 185Au 186Au 187Au 188Au 189Au 190Au 191Au 192Au 193Au 194Au 195Au 196Au 198Au 199Au 200Au 201Au 202Au 203Au 204Au 205Au

Gadolinium is considered to be moderately toxic
Gadolinium has the highest neutron cross-section among any stable nuclides
Gadolinium is used to make gadolinium yttrium garnets which have microwave applications.

It is also used in intravenous radiocontrast agents in magnetic resonance imaging (MRI).

Gadolinium compounds are used for making green phosphors for color TV tubes, and in manufacturing compact discs.