Buka menu utama
Arsen,  33As
Arsen 1a.jpg
Sifat umum
Nama, simbolarsen, As
Pengucapan/ˈɑːrsənɪk/ AR-sə-nik,
also /ɑːrˈsɛnɪk/ ar-SEN-ik when attributive
Penampilanabu-abu metalik
Arsen di tabel periodik
Hydrogen (diatomic nonmetal)
Helium (noble gas)
Litium (alkali metal)
Berilium (alkaline earth metal)
Boron (metalloid)
Karbon (polyatomic nonmetal)
Nitrogen (diatomic nonmetal)
Oksigen (diatomic nonmetal)
Fluor (diatomic nonmetal)
Neon (noble gas)
Natrium (alkali metal)
Magnesium (alkaline earth metal)
Aluminium (post-transition metal)
Silikon (metalloid)
Fosfor (polyatomic nonmetal)
Belerang (polyatomic nonmetal)
Klor (diatomic nonmetal)
Argon (noble gas)
Kalium (alkali metal)
Kalsium (alkaline earth metal)
Skandium (transition metal)
Titanium (transition metal)
Vanadium (transition metal)
Kromium (transition metal)
Mangan (transition metal)
Besi (transition metal)
Kobalt (transition metal)
Nikel (transition metal)
Tembaga (transition metal)
Seng (transition metal)
Galium (post-transition metal)
Germanium (metalloid)
Arsenik (metalloid)
Selenium (polyatomic nonmetal)
Bromin (diatomic nonmetal)
Kripton (noble gas)
Rubidium (alkali metal)
Stronsium (alkaline earth metal)
Itrium (transition metal)
Zirkonium (transition metal)
Niobium (transition metal)
Molibdenum (transition metal)
Teknesium (transition metal)
Rutenium (transition metal)
Rodium (transition metal)
Paladium (transition metal)
Perak (transition metal)
Kadmium (transition metal)
Indium (post-transition metal)
Timah (post-transition metal)
Antimon (metalloid)
Telurium (metalloid)
Yodium (diatomic nonmetal)
Xenon (noble gas)
Sesium (alkali metal)
Barium (alkaline earth metal)
Lantanum (lanthanide)
Serium (lanthanide)
Praseodimium (lanthanide)
Neodimium (lanthanide)
Prometium (lanthanide)
Samarium (lanthanide)
Europium (lanthanide)
Gadolinium (lanthanide)
Terbium (lanthanide)
Disprosium (lanthanide)
Holmium (lanthanide)
Erbium (lanthanide)
Tulium (lanthanide)
Iterbium (lanthanide)
Lutesium (lanthanide)
Hafnium (transition metal)
Tantalum (transition metal)
Tungsten (transition metal)
Renium (transition metal)
Osmium (transition metal)
Iridium (transition metal)
Platinum (transition metal)
Emas (transition metal)
Raksa (transition metal)
Talium (post-transition metal)
Timbal (post-transition metal)
Bismut (post-transition metal)
Polonium (post-transition metal)
Astatin (metalloid)
Radon (noble gas)
Fransium (alkali metal)
Radium (alkaline earth metal)
Aktinium (actinide)
Torium (actinide)
Protaktinium (actinide)
Uranium (actinide)
Neptunium (actinide)
Plutonium (actinide)
Amerisium (actinide)
Kurium (actinide)
Berkelium (actinide)
Kalifornium (actinide)
Einsteinium (actinide)
Fermium (actinide)
Mendelevium (actinide)
Nobelium (actinide)
Lawrensium (actinide)
Ruterfordium (transition metal)
Dubnium (transition metal)
Seaborgium (transition metal)
Bohrium (transition metal)
Hasium (transition metal)
Meitnerium (unknown chemical properties)
Darmstadtium (unknown chemical properties)
Roentgenium (unknown chemical properties)
Kopernisium (transition metal)
Nihonium (unknown chemical properties)
Flerovium (post-transition metal)
Moskovium (unknown chemical properties)
Livermorium (unknown chemical properties)
Tenesin (unknown chemical properties)
Oganeson (unknown chemical properties)
P

As

Sb
germaniumarsenselenium
Nomor atom (Z)33
Golongan, blokgolongan 15 (pniktogen), blok-p
Periodeperiode 4
Kategori unsur  metaloid
Bobot atom standar (±) (Ar)74.92160(2)
Konfigurasi elektron[Ar] 4s2 3d10 4p3
per kelopak
2, 8, 18, 5
Sifat fisika
Fasesolid
Titik sublimasi887 K ​(615 °C, ​1137 °F)
Kepadatan mendekati s.k.5.727 g/cm3
saat cair, pada t.l.5.22 g/cm3
Titik tripel1090 K, ​3628[1] kPa
Titik kritis1673 K, ? MPa
Kalor peleburan(grey) 24.44 kJ/mol
Kalor penguapan? 34.76 kJ/mol
Kapasitas kalor molar24.64 J/(mol·K)
Tekanan uap
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 553 596 646 706 781 874
Sifat atom
Bilangan oksidasi5, 3, 2, 1,[2] -3 ​sedikit oksida asam
ElektronegativitasSkala Pauling: 2.18
Energi ionisasi
(artikel)
Jari-jari atomempiris: 119 pm
Jari-jari kovalen119±4 pm
Jari-jari van der Waals185 pm
Lain-lain
Struktur kristaltrigon[3]
Struktur kristal Simple trigonal untuk arsen
Konduktivitas termal50.2 W/(m·K)
Resistivitas listrik333 n Ω·m (suhu 20 °C)
Arah magnetdiamagnetik[4]
Modulus Young8 GPa
Modulus Bulk22 GPa
Skala Mohs3.5
Skala Brinell1440 MPa
Nomor CAS7440-38-2
Isotop arsen terstabil
Iso­top Kelim­pahan Waktu paruh (t1/2) Moda peluruhan Pro­duk
73As syn 80.3 hari ε 73Ge
γ -
74As syn 17.78 d ε 74Ge
β+ 74Ge
γ -
β 74Se
75As 100% 75As stabil dengan 42 neutron
| referensi | di Wikidata

Referensi

  1. ^ Gokcen, N. A (1989). "The As (arsenic) system". Bull. Alloy Phase Diagrams. 10: 11–22. doi:10.1007/BF02882166. 
  2. ^ Ellis, Bobby D.; Charles, L.B. (2004). "Stabilized Arsenic(I) Iodide: A Ready Source of Arsenic Iodide Fragments and a Useful Reagent for the Generation of Clusters". Inorganic Chemistry. 43: 5981. doi:10.1021/ic049281s. 
  3. ^ Arsenic, mindat.org
  4. ^ editor-in-chief, David R. Lide. (2000). "Magnetic susceptibility of the elements and inorganic compounds". Handbook of Chemistry and Physics (PDF) (edisi ke-81). CRC press. ISBN 0849304814.