Elements
56

Ba

Barium

Barium (Ba) is a soft silvery white coloured metal that has the atomic number 56 in the periodic table. It is an Alkaline earth metal and is located in Group 2 of the periodic table. it has the symbol Ba.

Barium was discovered early in the 1600’s by the shoemaker Vincentius Casciorolus. In the mountains of Bologna, Italy he acquired a silvery white mineral that when heated would glow in the dark for hours after heating. It was not until 1808 when Humphry Davy isolated Barium by electrolysis of Barium sulphate similar to his work with Strontium. Barium is not found naturally occurring in the earth’s crust instead existing in the ores barite and witherite. It is most commonly used in the production of superconductors and in x-ray imagining of the digestive system. It is a solid metal at room temperature with a melting point of 727°c and a boiling point of 1897°c.

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FAQ's

What is the Melting Point for Barium?

Barium has a Melting Point of 727°F, meaning at 727°F it will turn to a liquid.

What is the Boiling Point for Barium?

Barium has a Boiling Point of 1870°F, meaning at 1870°F it will turn to a Gas.

What is the Electronegativity of Barium?

Barium's Electronegativty is 0.89. Electronegativity is a measure of how strongly atoms attract bonding electrons to themselves.

What is the Heat of Vaporization of Barium?

Barium has a Heat of Vaporization of 142 kJ/mol.

Uses

Barite, or barium sulfate (BaSO4), when ground is used as a filter for rubber, plastics, and resins. It is insoluable in water and so is used in X-rays of the digestive system. Barium nitrate, Ba(NO3)2, burns brilliant green and is used in fireworks.

Sources

Found in barytine (BaSO4) and witherite (BaCO3), never found in pure form due to its reactivity. Must be stored under kerosene to remain pure.

56
Protons
56
Electrons
81
Neutrons

Ba

Element Symbol
Ba
Atomic Weight
137.327
Atomic Number
56
State
Solid
Melting Point
Unknown
727
°C
Boiling Point
1870
Unknown
°C
Heat of Vaporization
142
Unknown
kJ/mol
Crystal Structure
Cubic: Body centered
Thermoconductivity
0.184
Unknown
W/cmK
Shells
2,8,18,18,8,2
Group
Alkali Earth Metal
Period
6
Block
S Block
Orbitals
[Xe] 6s2
Coefficient of Thermal Expansion
20.6 10^-6 K^-1
Covalent Radius
1.98 Å
Density at 293K
3.51 g/cm³
Electrical Conductivity
0.030 10^6/cm ohm
First Ionization Potential
5.2117 V
Second Ionization Potential
10.004 V
Third Ionization Potential
--
Ionic Radius
1.42 (+2) Å
Oxydation States
2
Lattice Parameter
5.013 Å
Lattice Parameter 2
--
Lattice Parameter 3
11.8358 Å
Pronounced

BAR-i-em

Discovered by

Sir Humphrey Davy

Discovery date

1808

Orbital configuration
2,8,18,18,8,2

Download the Periodic Table

Explore Other Alkali Earth Metals

87.62
38

Sr

Strontium
226
88

Ra

Radium
24.305
12

Mg

Magnesium
40.078
20

Ca

Calcium
9.012
4

Be

Beryllium
Alkaline earth metals is the second most reactive group of elements in the periodic table. They are found in group 2 of the periodic table (formally known as group IIA).
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