Templat:Kotak info boron

Boron,  5B
Boron mNACTEC.jpg
Sifat umum
Nama, simbolboron, B
Pengucapan/ˈbɔːrɒn/
Penampilanblack-brown
Boron 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)
-

B

Al
beriliumboronkarbon
Nomor atom (Z)5
Golongan, blokgolongan 13, blok-p
Periodeperiode 2
Kategori unsur  metaloid
Bobot atom standar (±) (Ar)10.811(7)
Konfigurasi elektron[He] 2s2 2p1
per kelopak
2, 3
Sifat fisika
Fasesolid
Titik lebur2349 K ​(2076 °C, ​3769 °F)
Titik didih4200 K ​(3927 °C, ​7101 °F)
Kepadatan saat cair, pada t.l.2.08 g/cm3
Kalor peleburan50.2 kJ/mol
Kalor penguapan480 kJ/mol
Kapasitas kalor molar11.087 J/(mol·K)
Tekanan uap
P (Pa)1101001 k10 k100 k
at T (K)234825622822314135454072
Sifat atom
Bilangan oksidasi3, 2, 1[1] ​sedikit oksida asam
ElektronegativitasSkala Pauling: 2.04
Energi ionisasi
(artikel)
Jari-jari atomempiris: 90 pm
Jari-jari kovalen84±3 pm
Jari-jari van der Waals192 pm
Lain-lain
Struktur kristal​rombohedron
Struktur kristal Rombohedral untuk boron
Kecepatan suara batang ringan16,200 m/s (suhu 20 °C)
Ekspansi kalor(ß form) 5–7[2] µm/(m·K) (suhu 25 °C)
Konduktivitas termal27.4 W/(m·K)
Resistivitas listrik~106  Ω·m (suhu 20 °C)
Arah magnetdiamagnetic[3]
Skala Mohs~9.5
Nomor CAS7440-42-8
Sejarah
PenemuanJ. Gay-Lussac & [4] (30 Juni 1808)
Isolasi pertamaH. Davy[5] (9 Juli 1808)
Isotop boron terstabil
Iso­topKelim­pahanWaktu paruh (t1/2)Moda peluruhanPro­duk
10B19.9(7)%*10B stabil dengan 5 neutron[6]
11B80.1(7)%*11B stabil dengan 6 neutron[6]
  • Boron-10 content may be as low as 19.1% and as
    high as 20.3% in natural samples. Boron-11 is
    the remainder in such cases.
    [7]
| referensi | di Wikidata

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