My CSS / Adsense

Cadmium

Cd

INTRODUCTION

Cadmium is a silvery-white metallic element that can easily be shaped into desire form.It occurs as the principal constituent of a mineral only in the rare greenockite.It is the 65th most abundant elements on the Earth's crust.

When heated, cadmium burns in air with a bright light, forming its oxide.Cadmium and solutions of its compounds are highly toxic, with cumulative effects similar to those of mercury poisoning.

BASIC INFORMATIONS

  • Atomic Number
  • 48
  • Atomic Mass
  • 112.414
  • Atomic radius
  • 0.141
  • Ionization energy
  • 876
  • Electronic config
  • 2,8,18,18,2
  • Principal Valency
  • +2
  • Density g/cm³
  • 8.65
  • Melting point °C
  • 321.07
  • Boiling point °C
  • 767
  • Type of Element
  • Metal
  • Electronegativity
  • 1.7
  • Element Category
  • Zinc Group
  • Appearance
  • Silvery white solid
  • Block
  • d-block
  • Period
  • 5
  • Group
  • 12
  • No of Isotopes
  • 39
  • Occurrence
  • Combine form
  • Abundance in ppm
  • 0.16
  • Year of Discovery
  • 1807

EXTRACTION

It is obtain as a by-product in the refining of zinc ores.

OXIDATION STATES

+2,+1 (Mildly Acidic)

MAJOR SOURCE

Missouri, Montana, Silesia

EXAMPLES OF COMPOUND PRESENT

CdO, CdS, CdSe

ECONOMIC IMPORTANCE

* Cadmium is used with lead, tin, and bismuth in the manufacture of fusible metals for automatic sprinkler systems, fire alarms, and electric fuses.

* Its salts are used in photography and in the manufacture of fireworks, rubber, fluorescent paints, glass, and porcelain.

* Cadmium sulfide is employed in a type of photovoltaic cell, and nickel-cadmium batteries are in common use for specialized purposes.

* It absorb neutron perfectly, and is used to make control rods for nuclear reactors.

Developed by successtar (+2347061855688).