Индиум

49
In
Група
13
Периода
5
блок
p
Protons
Electrons
Neutrons
49
49
66
Општи Својства
Атомски број
49
Атомска тежина
114,818
Mass Number
115
Category
Слаб метал
Color
Silver
Radioactive
Не
From the brilliant indigo line in its spectrum
Кристална структура
Централно тетрагонално
History
Ferdinand Reich and Hieronymous Theodor Richter first identified indium in sphalerite by its bright indigo-blue spectroscopic emission line.

As no element was known with a bright blue emission they concluded that a new element was present in the minerals.

Richter went on to isolate the metal in 1864.
Electrons per shell
2, 8, 18, 18, 3
Електронска конфигурација
[Kr] 4d10 5s2 5p1
In
When it is bent, indium emits a high-pitched 'cry'
Физички Својства
Фаза
Solid
Густина
7,31 g/cm3
Точка на топење
429,75 K | 156,6 °C | 313,88 °F
Точка на вриење
2345,15 K | 2072 °C | 3761,6 °F
Топлина на топење
3,26 kJ/mol
Топлина на испарување
230 kJ/mol
Specific Heat Capacity
0,233 J/g·K
Abundance in Earth's crust
0,000016%
Abundance in Universe
3×10-8%
Ingot
Кредити на слика: Images-of-elements
Ingot of 40 grams of indium
CAS Number
7440-74-6
PubChem CID Number
5359967
Атомски Својства
Атомски полупречник
167 pm
Ковалентен полупречник
142 pm
Електронегативност
1,78 (Полингова скала)
Ionization Potential
5,7864 eV
Atomic Volume
15,7 cm3/mol
Thermal Conductivity
0,816 W/cm·K
Oxidation States
1, 2, 3
Applications
Indium's current primary application is to form transparent electrodes from indium tin oxide in liquid crystal displays and touchscreens.

It is widely used in thin-films to form lubricated layers.

It is also used for making particularly low melting point alloys, and is a component in some lead-free solders.
Indium is considered to be of low toxicity
Isotopes
Stable Isotopes
113In
Unstable Isotopes
97In, 98In, 99In, 100In, 101In, 102In, 103In, 104In, 105In, 106In, 107In, 108In, 109In, 110In, 111In, 112In, 114In, 115In, 116In, 117In, 118In, 119In, 120In, 121In, 122In, 123In, 124In, 125In, 126In, 127In, 128In, 129In, 130In, 131In, 132In, 133In, 134In, 135In