indium

Integrated Characters

Name, Symbol, No.

Indium, In, 49

Series

Weak Metal

Group, Period, Block

13(A),5,P

Density & Hardness

7310kg/m³1.2

Color & Appearance

Silvery-gray Luster

Content in the Earth's Crust

1×10-5%

Atomic Properties

Atomic Weight

114.818 Atomic Weight Unit

Atomic Radius (Calculated Value)

155(156) pm

Covalent Radius

144pm

Van Der Waals Radius

193pm

Valence Electron Configuration

(Krypton)4d105s25p1

Electron Configuration On Each Energy Level

2 ,8,18,18,3

Oxide Value (Oxide)

3(Amphoteric)

Crystal Structure

Tetragonal

Physical Properties

Substance State

Solid State

Melting Point

429.75K (156.60)

Boiling Point

2345K (2072)

Molar Volume

15.76×10-6m3/mol

Heat of Vaporization

231.5KJ/mol

Heat of Fusion

3.263 KJ/mol

Other Properties

Electronegativity

1.78(Pauling Scale)

Specific Heat Capacity

233 J/(kg.k)

Conductivity

11.6×106/(Ω·m)

Thermal Conductivity

81.6W/(m.K)

The First Ionization Energy

558.3 KJ/mol

The Second Ionization Energy

1820.7KJ/mol

The Third Ionization Energy

2704KJ/mol

he Fourth Ionization Energy

5210KJ/mol