Symbol Sb
Atomic Number 51
Atomic Mass 121.760 g.mol -1
Discoverey approx 1600 BC

Chemical Properties of Antimony

Group 15 Melting point 630.628°C, 1167.13°F, 903.778 K
Period 5 Boiling point 1587°C, 2889°F, 1860 K
Block p Density (g cm−3) 6.68
Atomic number 51 Relative atomic mass 121Sb
State at 20°C Solid Key isotopes 7Li
Electron configuration [Kr]4d15s5p3 CAS number 7440-36-0
ChemSpider ID 4510681 ChemSpider is a free chemical structure database.

What is Antimony?

  • Antimony is a semi-metallic chemical element with an atomic number 51 and symbol Sb in the Periodic Table.
  • Latin name of Antimony is Stibium. It is generally found in two forms namely metallic form and non-metallic form.
  • Antimony compounds are used since ancient times as a component in cosmetics.
  • It is naturally found in Earth’s crust in the ores of valentinite and stibnite.

Uses of Antimony

  • Pure antimony is used in the manufacturing of certain semiconductors like infrared detectors and diodes.
  • It is used to harden lead and increase its durability.
  • Batteries consist of antimony for smooth functioning.
  • It is also used to make small arms & bullets.
  • It is a very good flame retardant.

Properties of Antimony

  • The metallic form appears in a bright silver colour brittle and non-metallic form will appear as the grey powder.
  • It is a weak conductor of electricity and heat. The special feature of antimony and its alloys is that they expand on cooling.

Certain Health Facts About Antimony

  • It is toxic but does not have any harmful effects. But constant exposure to this may cause some diseases like lung diseases, heart problems and stomach ulcers.

Practise This Question

Which of the following sets has strongest tendency to form anions?