What is the atomic number of Lawrencium?

The atomic number of Lawrencium (Lr) is 103.

What is the atomic mass of Lawrencium?

The atomic mass of Lawrencium is 266.0 atomic mass units (u).

What group and period is Lawrencium in?

Lawrencium is in period 7, group 3 of the periodic table. It is a actinide element in the f-block.

How many valence electrons does Lawrencium have?

Lawrencium has 3 valence electron(s).

Lawrencium (Lr) — Atomic Number 103

Lawrencium (Lr) — Atomic Number 103Last actinide, named after cyclotron inventor.Lawrencium Properties

Atomic Number: 103

Symbol: Lr

Atomic Mass: 266.0 u

Category: actinide

Group: 3

Period: 7

Block: f-block

Electron Configuration: [Rn] 5f14 7s2 7p1

Valence Electrons: 3

Electronegativity: 1.3

Ionization Energy: 470.0 kJ/mol

Electron Affinity: 0.0 kJ/mol

Atomic Radius: 186.0 pm

Melting Point: 1900.0 K

Boiling Point: 0.0 K

Lawrencium in the Periodic TableLawrencium is a actinide element located in period 7, group 3 of the periodic table. It has the chemical symbol Lr and atomic number 103. The electron configuration of Lawrencium is [Rn] 5f14 7s2 7p1, giving it 3 valence electron(s).Interactive Lawrencium LearningExplore Lawrencium in interactive 3D with the Soren Periodic Table. View Bohr model, quantum orbital model, nucleus inspector, and phase lab with temperature and pressure controls. Includes fun facts, real-world uses, and NCTB curriculum integration for Bangladeshi students.