Atomic Number of Barium

Barium Atomic Number

Atomic Number of Barium is 56.

Chemical symbol for Barium is Ba. Number of protons in Barium is 56. Atomic weight of Barium is 137.327 u or g/mol. Melting point of Barium is 725 °C and its the boiling point is 1640 °C.

» Boiling Point » Melting Point » Abundant » State at STP » Discovery Year

About Barium

Barium is a soft light silver metal which belongs to the group of the alkaline earth metals. It is quite reactive and easily reacts with air and water, as well as forms alloys and other chemical compounds. The name of barium comes from a Greek word meaning heavy. It is impossible to find this element in its pure form on our planet, and it is extracted from various minerals and chemical compounds. This element does not exist in the most of biological living organisms, and in its pure form it is quite toxic. Industrial uses of barium include producing various vacuum or cathode tubes, wires, etc. This element found application in producing pigmentation agents and X-ray technology equipment.

Uses of Barium

Barium, a soft, silvery metallic element with the symbol Ba, was mostly used in vacuum tubes, like TV picture tubes. Barium is especially used in alloys with aluminium, nickel, steel, iron, calcium, silicon and manganese. Barium nitrate, an alloy with the formula Ba(NO3)2, can be used in fireworks. Barium sulfate, a compound with the formula BaSO4, is employed in the petroleum industry, as well as in glassmaking, paints, rubbers, plastics, ink, and varnishes. Barium carbonate (BaCO3) is exploited in the manufacture of specialty glass, or in ceramics. The applications of Barium chloride (BaCl2) include laboratories and heat-treating baths.

Compounds with Barium

Properties of Barium Element

Atomic Number (Z)56
Atomic SymbolBa
Atomic Weight137.327 u
Density3.594 g/cm3
Melting Point (K)1000 K
Melting Point (℃)725 °C
Boiling Point (K)2170 K
Boiling Point (℃)1640 °C
Heat Capacity0.204 J/g · K
Abundance425 mg/kg
State at STPSolid
DescriptionAlkaline earth metal
Electronegativity (Pauling) χ0.89
Ionization Energy (eV)5.2117
Atomic Radius215pm
Covalent Radius198pm
Valence Electrons2
Year of Discovery1808

What is the Boiling Point of Barium?

Barium boiling point is 1640 °C. Boiling point of Barium in Kelvin is 2170 K.

What is the Melting Point of Barium?

Barium melting point is 725 °C. Melting point of Barium in Kelvin is 1000 K.

How Abundant is Barium?

Abundant value of Barium is 425 mg/kg.

What is the State of Barium at Standard Temperature and Pressure (STP)?

State of Barium is Solid at standard temperature and pressure at 0℃ and one atmosphere pressure.

When was Barium Discovered?

Barium was discovered in 1808.