Indium

49
In
Kumpulan
13
Kala
5
Blok
p
Proton
Elektron
Neutron
49
49
66
Ciri-Ciri Am
Nombor atom
49
Berat atom
114.818
Nombor jisim
115
Kategori
Logam lemah
Warna
Perak
Radioaktif
Tidak
From the brilliant indigo line in its spectrum
Struktur hablur
Pusat Tetragonal
Sejarah
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.
Bilangan elektron per petala
2, 8, 18, 18, 3
Konfigurasi elektron
[Kr] 4d10 5s2 5p1
In
When it is bent, indium emits a high-pitched 'cry'
Ciri-Ciri Fizikal
Fasa
Pepejal
Ketumpatan
7.31 g/cm3
Takat lebur
429.75 K | 156.6 °C | 313.88 °F
Takat didih
2345.15 K | 2072 °C | 3761.6 °F
Haba pelakuran
3.26 kJ/mol
Haba pengewapan
230 kJ/mol
Muatan haba molar
0.233 J/g·K
Banyak pada kerak bumi
0.000016%
Banyak pada alam semesta
3×10-8%
Ingot
Kredit imej: Images-of-elements
Ingot of 40 grams of indium
Nombor CAS
7440-74-6
PubChem CID Number
5359967
Ciri-Ciri Atom
Jejari atom
167 pm
Jejari kovalen
142 pm
Keelektronegatifan
1.78 (Skala Pauling)
Kebolehan mengion
5.7864 eV
Isipadu atom
15.7 cm3/mol
Daya pengaliran terma
0.816 W/cm·K
Keadaan pengoksidaan
1, 2, 3
Aplikasi
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
Isotop
Isotop stabil
113In
Isotop tidak stabil
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