Elements
40

Zr

Zirconium

Pronounced

zer-KO-ni-em

Zirconium (Zr) is a gray white metal that has the atomic number 40 in the periodic table. It is a Transition metal and located in Group 4 of the periodic table. It has the symbol Zr.

Zirconium is named after the mineral Zircon which draws its name from the Persian ‘zargun’ which means gold like. Zirconium was mentioned in biblical writings but it was not until 1789 when Martin Heinrich Klaproth analysed a sample from Sri Lanka identifying an element he called Zirkonerde. It was Humphrey Davy who tried to isolate Zirconium using electrolysis in 1808 but it was in 1824when Jons Jacob Berzelius heated Zirconium Fluoride with iron to isolate the Zirconium. Zirconium is used to produce surgical equipment due to its high resistance and is used in nuclear fuel supplies. It is located in Group 4 as a Transition metal. It has a melting point of 1855°c and a boiling point of 4377°c.

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FAQ's

What is the Melting Point for Zirconium?

Zirconium has a Melting Point of 1852°C, meaning at 1852°C it will turn to a liquid.

What is the Boiling Point for Zirconium?

Zirconium has a Boiling Point of 4409°C, meaning at 4409°C it will turn to a Gas.

What is the Electronegativity of Zirconium?

Zirconium's Electronegativty is 1.33. Electronegativity is a measure of how strongly atoms attract bonding electrons to themselves.

Discovered by

Martin Klaproth

Discovery date

1789

What is the Heat of Vaporization of Zirconium?

Zirconium has a Heat of Vaporization of 58.2 kJ/mol.

Uses

Used in alloys such as zircaloy which is used in nuclear applications since it does not readily absorb neutrons. Also baddeleyite is used in lab crucibles. Used in high-performance pumps and valves. Clear zircon (ZrSiO4) is a popular gemstone.

Sources

Found in many minerals such as zircon and baddeleyite.

About the author

Nathan M

Author

Nathan has a degree in BSc Biomedical Chemistry at Warwick University and a degree in PGCE Science at Wolverhampton University, UK. Nathan's subject matter ranges from general chemistry and organic chemistry. Nathan also created the curriculum on Breaking Atom in the course page.

Citation

"Zirconium" Published on Dec 30, 2019. https://breakingatom.com/elements/zirconium
40
Protons
40
Electrons
51
Neutrons

Zr

Element Symbol
Zr
Atomic Weight
91.224
Atomic Number
40
State
Solid
Melting Point
Unknown
1852
°C
Boiling Point
4409
Unknown
°C
Heat of Vaporization
58.2
Unknown
kJ/mol
Crystal Structure
Hexagonal
Thermoconductivity
0.227
Unknown
W/cmK
Shells
2,8,18,10,2
Group
Transition Metal
Period
5
Block
D Block
Orbitals
[Kr] 4d2 5s2
Coefficient of Thermal Expansion
5.7 10^-6 K^-1
Covalent Radius
1.45 Å
Density at 293K
6.4 g/cm³
Electrical Conductivity
0.0236 10^6/cm ohm
First Ionization Potential
6.6339 V
Second Ionization Potential
13.13 V
Third Ionization Potential
22.99 V
Ionic Radius
.84 (+4) Å
Oxydation States
4
Lattice Parameter
3.2313 Å
Lattice Parameter 2
--
Lattice Parameter 3
4.388 Å
Orbital configuration
2,8,18,10,2

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Transition metal is any of various chemical elements that have valence electrons (electrons that can participate in the formation of chemical bond) in two shells instead of only one. They form group 3 (IIIb) through group 12 (IIb).
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