Indium
49
In
Groep
13
Periode
5
Blok
p
Protrone
Elektrone
Neutrone
49
49
66
Algemene Eienskappe
Atoom Nommer
49
Atoommassa
114,818
Massa Nommer
115
Kategorie
Hoofgroepmetale
Kleur
Silver
Radioaktief
Nee
From the brilliant indigo line in its spectrum
Kristalstruktuur
Centered Tetragonal
Geskiendenis
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.
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.
Elektrone per skil
2, 8, 18, 18, 3
Elektronkonfigurasie
[Kr] 4d10 5s2 5p1
When it is bent, indium emits a high-pitched 'cry'
Fisiese Eienskappe
Fase
Soliede
Digtheid
7,31 g/cm3
Smeltpunt
429,75 K | 156,6 °C | 313,88 °F
Kookpunt
2345,15 K | 2072 °C | 3761,6 °F
Heat of Fusion
3,26 kJ/mol
Heat of Vaporization
230 kJ/mol
Spesifieke Hitte Kapasiteit
0,233 J/g·K
Oorvloed in die aardkors
0,000016%
Oorvloed in die heelal
3×10-8%
CAS Nommer
7440-74-6
PubChem CID Nommer
5359967
Atomiese Eienskappe
Atoom radius
167 pm
Kovalente Radius
142 pm
Elektronegatiewiteit
1,78 (Pauling scale)
Ionisasie potensiaal
5,7864 eV
Atoom volume
15,7 cm3/mol
Termiese geleidingsvermoë
0,816 W/cm·K
Oksidasiestate
1, 2, 3
Toepassings
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.
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
Isotope
Stabiele Isotope
113InOnstabiele Isotope
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