Tabla

Electronic ConfigurationXe 6s2 4f14 5d10 6p3

Melting Point271.5°C

Boiling Point1610°C

Density9.747g cm⁻³

Description

White crystalline metal with a pink tinge, belongs to group 15. Most diamagnetic of all metals and has the lowest thermal conductivity of all the elements except Mercury. Lead-free Bismuth compounds are used in cosmetics and medical procedures. Burns in the air and produces a blue flame. In 1753, C.G. Junine first demonstrated that it was different from Lead.

Covalent Radius151pm

Double141pm

Triple135pm

Ionisation Energies

Oxidation States0, +3, +5

Uses

Main use is in pharmaceuticals and low melting point alloys used as fuses.

Electron Affinity90.924kJ mol⁻¹

Electronegativity1.9PAULING

Atomic Volume21.3cm³ mol⁻¹

Atomic Radius170pm

Metallic Radius151pm

Van Der Waals Radius207pm

Sources

It can be found free in nature and in minerals like bismuthine (Bi₂O₃) and in Bismuth ochre (Bi₂O₃)

Discovery

Discovered by ancient civilisations

Name Origin

German: bisemutum, (white mass), Now spelled wismut.

CAS7440-69-9

Crust Abundance0.0085mg kg⁻¹

Sea Abundance2.00x10⁻⁵mg dm⁻³

Enthalpy of Vapourisation 172kJ mol⁻¹

Enthalpy of Fusion11kJ mol⁻¹

Enthalpy of Formation209.6kJ mol⁻¹

Specific Heat - 20°C0.124J (g ⋅ K)⁻¹

Thermal Conductivity7.9W (m ⋅ K)⁻¹

Isotope	Abundance	Half Life
209Bi	100%	1.990x10¹⁹y
207Bi	-	-

https://reuben.science

https://github.com/reubn/tabla

Using data from mendeleev.

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