Hidrogen

1
H
Golongan
1
Periode
1
Blok
s
Proton
Elektron
Neutron
1
1
0
Sifat Umum
Nomor atom
1
Massa atom
1,00794
Nomor massa
1
Kategori
Nonlogam lainnya
Warna
Tak berwarna
Radioaktif
Tidak
Dari kata Yunani hydro, air, dan genes, membentuk
Struktur kristal
Segienam Sederhana
Sejarah
Henry Cavendish was the first to distinguish hydrogen from other gases in 1766 when he prepared it by reacting hydrochloric acid with zinc.

In 1670, English scientist Robert Boyle had observed its production by reacting strong acids with metals.

French scientist Antoine Lavoisier later named the element hydrogen in 1783.
Elektron per kulit
1
Konfigurasi elektron
1s1
H
Hydrogen is the primary component of Jupiter and the other gas giant planets
Sifat Fisika
Fase
Gas
Kepadatan
0,00008988 g/cm3
Titik lebur
14,01 K | -259,14 °C | -434,45 °F
Titik didih
20,28 K | -252,87 °C | -423,17 °F
Kalor peleburan
0,558 kJ/mol
Kalor penguapan
0,452 kJ/mol
Kapasitas kalor molar
14,304 J/g·K
Kelimpahan di kerak bumi
0,15%
Kelimpahan di alam semesta
75%
Vial
Kredit Gambar: Images-of-elements
Vial of glowing ultrapure hydrogen
Nomor CAS
1333-74-0
PubChem CID Number
783
Sifat Atom
Jari-jari atom
53 pm
Jari-jari kovalen
31 pm
Elektronegativitas
2,2 (Skala Pauling)
Potensi Ionisasi
13,5984 eV
Volume atom
14,4 cm3/mol
Kondusivitas termal
0,001815 W/cm·K
Bilangan oksidasi
-1, 1
Aplikasi
Liquid hydrogen is used as a rocket fuel.

Hydrogen is commonly used in power stations as a coolant in generators.

Hydrogen's two heavier isotopes (deuterium and tritium) are used in nuclear fusion.

Used as a shielding gas in welding methods such as atomic hydrogen welding.
Hydrogen poses a number of hazards to safety, from fires when mixed with air to being an asphyxiant in its pure form
Isotop
Isotop stabil
1H, 2H
Isotop tidak stabil
3H, 4H, 5H, 6H, 7H