کينډۍ:Infobox arsenic

Arsenic,  ₃₃As

عمومي خواص
Pronunciation	/ˈɑːrsɪnɪk/, also /ɑːrˈsɛnɪk/ when attributive AR-SIN-ik, ar-SEN-ik
Allotropes	grey (most common), yellow, black
Appearance	metallic grey
Arsenic په دوراني جدول کې
P ↑ As ↓ Sb germanium ← arsenic → selenium ‍
اټومي شمیره (Z)	33
گروپ, پیریود	group 15 (pnictogens), period 4
بلاک	p-block
Element category	metalloid
معياري اټومي وزن (Ar)	کينډۍ:Val
Electron configuration	[Ar] 3d10 4s2 4p3
Electrons per shell	2, 8, 18, 5
فزیکي خواص
حالت (at STP)	جامد
Sublimation point	887 K ​(615 °C, ​1137 °F)
Density near r.t.	5.727 g/cm3
when liquid, at m.p.	5.22 g/cm3
Triple point	1090 K, ​3628 kPa
Critical point	1673 K, ? MPa
Heat of fusion	grey: 24.44 kJ/mol
Heat of vaporization	34.76 kJ/mol (?)
Molar heat capacity	24.64 J/(mol·K)
Vapor pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 553 596 646 706 781 874
اټومي خواص
Oxidation states	5, 4, 3, 2, 1, −1, −2, −3 ​(a mildly acidic oxide)
Electronegativity	Pauling scale: 2.18
Ionization energies	1st: 947.0 kJ/mol 2nd: 1798 kJ/mol 3rd: 2735 kJ/mol (more)
Atomic radius	empirical: 119 pm
Covalent radius	119±4 pm
Van der Waals radius	185 pm
Miscellanea
Crystal structure	​rhombohedral Rhombohedral crystal structure for arsenic
Thermal expansion	5.6 µm/(m·K) (at r.t.)
د تودوخې تېرېدنه	50.2 W/(m·K)
Electrical resistivity	333 nΩ·m (at 20 °C)
Magnetic ordering	diamagnetic
Magnetic susceptibility (χmol)	−5.5·10−6 cm3/mol
Young's modulus	8 GPa
Bulk modulus	22 GPa
Mohs hardness	3.5
Brinell hardness	1440 MPa
CAS Number	7440-38-2
History
Discovery	شاوخوا 800 CE
Main isotopes of arsenic
آيسو­ټوپ Abun­dance نیم ژوند (t1/2) Decay mode Pro­duct 75As 100% stable

Element navigation

PTarsenicPT

Ge ←

iso 33As ibox    wd:Q871

→ Se

سرچينې

د سرچينو همدا لړليک په ليکنه کې نه ښکاري.

کينډۍ لاسوند[جوړول]