Arsenic

Ẹ le fẹ̀ jù báyìí lọ tàbí kí ẹ ṣàtúnṣe rẹ̀ lọ́nà tí yíò mu kúnrẹ́rẹ́.

Arsenic, 33As
Arsenic
Arsenic
Pípè
Ìhànsójúmetallic grey
Ìwúwo átọ̀mù Ar, std(As)74.921595(6)
Arsenic ní orí tábìlì àyè
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
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Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson
P

As

Sb
germaniumarsenicselenium
Nọ́mbà átọ̀mù (Z)33
Ẹgbẹ́group 15 (pnictogens)
Àyèàyè 4
Àdìpọ̀Àdìpọ̀-p
Ẹ̀ka ẹ́límẹ́ntì  Metalloid
Ìtò ẹ̀lẹ́ktrọ́nù[Ar] 3d10 4s2 4p3
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan2, 8, 18, 5
Àwọn ohun ìní ara
Ìfarahàn at STPsolid
Sublimation point887 K ​(615 °C, ​1139 °F)
Kíki (near r.t.)5.727 g/cm3
when liquid (at m.p.)5.22 g/cm3
Triple point1090 K, ​3628  kPa
Critical point1673 K, ? MPa
Heat of fusion(grey) 24.44 kJ/mol
Heat of ? 34.76 kJ/mol
Molar heat capacity24.64 J/(mol·K)
 pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 553 596 646 706 781 874
Atomic properties
Oxidation states−3, −2, −1, 0, +1, +2, +3, +4, +5 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment
ElectronegativityPauling scale: 2.18
energies
  • (more)
Atomic radiusempirical: 119 pm
Covalent radius119±4 pm
Van der Waals radius185 pm
Color lines in a spectral range
Color lines in a spectral range
Spectral lines of arsenic
Other properties
Natural occurrenceprimordial
Crystal structure ​rhombohedral
Rhombohedral crystal structure for arsenic
Thermal conductivity50.2 W/(m·K)
Electrical resistivity333 n Ω·m (at 20 °C)
Magnetic orderingdiamagnetic
Young's modulus8 GPa
Bulk modulus22 GPa
Mohs hardness3.5
Brinell hardness1440 MPa
CAS Number7440-38-2
Main isotopes of arsenic
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct
73As syn 80.3 d ε - 73Ge
γ 0.05D, 0.01D, e -
74As syn 17.78 d ε - 74Ge
β+ 0.941 74Ge
γ 0.595, 0.634 -
β 1.35, 0.717 74Se
75As 100% 75As is stable with 42 neutrons
Àdàkọ:Category-inline
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