Lawrencium - Lr

Lawrencium Element
Lawrencium Symbol Lr
Lawrencium Atomic Number 103
Lawrencium Atomic Mass (262) g.mol −1
Discovered by Albert Ghiorso in 1961

It is a synthetic chemical and has 12 isotopes. The most stable isotope from the twelve is 266Lr which has a half-life of eleven hours.

Check out the following link to learn about isotopes and isobars.

Chemical Properties of Lawrencium

Group Actinides Melting point 1627°C, 2961°F, 1900 K
Period 7 Boiling point Unknown
Block f Density (g cm−3) Unknown
Atomic number 103 Relative atomic mass [262]
State at 20°C Solid Key isotopes 262Lr
Electron configuration [Rn] 5f14 7s7p1 CAS number 22537-19-5
ChemSpider ID 28934 ChemSpider is a free chemical structure database

What is Lawrencium?

  • Lawrencium with atomic number 103 is represented in the periodic table with the symbol ‘Lr’
  • It never occurs as a free element in nature it was created by accelerating sub-atomic particles that have been surrounded by a circle. So that there is sufficient energy to destroy an existing atom and create a new atom.
  • Lawrencium is a radioactive transuranic element that is synthesized from californium.

Uses of Lawrencium

  • Lawrencium is of not much use due to its radioactive nature.
  • They are purely used for scientific research only.

Properties of Lawrencium

  • Lawrencium is of not much use. They are purely used for scientific research only.
  • Isotopes of Lawrencium are radioactive. Its isotopes have a half-life of eleven hours and it is the longest-lived super-heavy till date.
  • Among all isotopes of Lawrencium, only 12 isotopes are known with mass numbers 252, 262 and 266.

Certain Facts About Lawrencium

  • It was discovered in the year 1961, in February 1991.
  • It is actually an actinide in spite of its position in the periodic table that should be a transition metal.

Frequently asked questions

What is the melting point of Lawrencium?

1627 °C.

Lawrencium belongs to which family?

This element is from Actinide series which is located in Group 3 elements of the Periodic Table.

Write the electronic configuration of lawrencium.

[Rn] 5f14 7s7p1.

Lawrencium is a radioactive metal. True or false?


What is the freezing point of Lr?

1,627 °C

What is the colour of Lr?

Lawrencium belongs to class actinide metals.
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