33 As Arsenic 74,922 u

Arsenic

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الدورة
4
المجموعة
15
الكتلة
p-كتلة
الطور (STP)
Solid

Arsenic is a metalloid known since antiquity, historically notorious as a poison. It is used in semiconductors and wood preservatives.

المظهر: Metallic grey

الخصائص الفيزيائية

الكتلة الذرية 74.922 u
الكثافة 5.727 g/cm³
نقطة الانصهار 816.9 °C
نقطة الغليان 613.9 °C
الطور عند STP Solid
نصف القطر الذري 114.0 pm

الخصائص الإلكترونية

الكهروسالبية 2.18
طاقة التأين 947.0 eV
ألفة الإلكترون 78.2 eV
إلكترونات التكافؤ 5

التوزيع الإلكتروني

التهيئة [Ar] 3d¹⁰ 4s² 4p³

Electron Shell Configuration

Arsenic electron shell configuration As 2e⁻ 8e⁻ 18e⁻ 5e⁻

Position in Periodic Table

Arsenic position in the periodic table As

الاكتشاف

اكتشفه: Albertus Magnus
السنة: 1250

الكتلة والدورة

الكتلة

الدورة

الجدول الدوري

اللانثانيدات الأكتينيدات

Compounds Containing Arsenic

المزيد من شبه فلز

Frequently Asked Questions

What is Arsenic?
Arsenic (As) is a chemical element with atomic number 33. It is a solid at standard temperature and pressure, classified as a شبه فلز.
What are the key properties of Arsenic?
Arsenic has an atomic mass of 74.922 u, density of 5.727 g/cm³, melting point of 816.9°C, boiling point of 613.9°C.
What is the electron configuration of Arsenic?
The electron configuration of Arsenic is [Ar] 3d10 4s2 4p3. It is in the p-block of the periodic table.
Who discovered Arsenic?
Arsenic was discovered by Albertus Magnus in 1250.
What is the electronegativity of Arsenic?
Arsenic has an electronegativity of 2.18 on the Pauling scale.