特性

CAS Number7440-35-9
PubChem CIDna
原子半径173
モル体積17.78
原子量[243]
ブロックf
沸点2,607
Bulk Modulus
カテゴリアクチノイド
結晶構造六方最密構造
銀色
共有結合半径180
密度13.69
Electrical Resistivity
電子配置[Rn] 5f7 7s2
電子殻2, 8, 18, 32, 25, 8, 2
電気陰性度1.3
Electrons95
na
融解熱na
蒸発熱na
イオン化エネルギー5.974
Magnetic Ordering
Magnetic Susceptibility
質量[243]
Mass Number95
融点1,176
名称アメリシウム
中性子148
原子番号243
酸化数2, 3, 4, 5, 6
周期7
固体
Poisson Ratio
陽子95
Shear Modulus
熱容量-
記号Am
熱伝導率0.1
Van der Waals radius
Young's Modulus
天然存在比
地殻中における存在比na
宇宙空間における存在比na
Am アメリシウム 95 (243) 7 f 95 994.0 2607.0 [Rn] 5f7 7s2 2 8 18 32 25 8 2 13.7 None Silver Hexagonal 1.3 {"1":"578"} 578 +3,4,5,6 1.84 20.8 10.0 1 7388 y 1.065×104y AlphaEmission Solid, Actinide, Radioactive, Synthetic am-er-ISH-i-em Silvery-white, artificially produced radioactive metal. Americium-241 is currently used in smoke detectors. Produced by bombarding plutonium with neutrons. PB38NyjmneE Americium
Gold has been known since prehistoric times and was the first metal used by humans.

Gold artifacts dated to 5000 years ago have been found in Egyptian tombs.

Gold of 98% purity has been found in Nahal Qunah in the ancient kingdom of Israel, dating from about 6000 years ago. From the Latin word aurum meaning gold 95 1944 Glenn Seaborg, Ralph James., L. Morgan, Albert Ghiorso USA From the English word "America"

金の同位体

Standard Atomic Weight

安定同位体

不安定同位体

231Am 232Am 233Am 234Am 235Am 236Am 237Am 238Am 239Am 240Am 241Am 242Am 243Am 244Am 245Am 246Am 247Am 248Am 249Am

Gold is considered to be non-toxic
India is the world's largest single consumer of gold
Gold is used in coinage and is a standard for monetary systems in many countries.

It is also extensively used for jewelry, decoration, dental work, and for plating.

Gold is used widely in microelectronic circuits to ensure reliable, corrosion-resistant and static-free performance.

Gold leaf, flake or dust is used in some gourmet foods as decorative ingredient.