Holmium Facts - Element Atomic Number 67

Holmium Facts - Element Atomic Number 67

We are searching data for your request:

Forums and discussions:
Manuals and reference books:
Data from registers:
Wait the end of the search in all databases.
Upon completion, a link will appear to access the found materials.

Holmium is atomic number 67 with element symbol Ho. It is a rare earth metal belonging to the lanthanide series.

Holmium Basic Facts

Atomic Number: 67

Symbol: Ho

Atomic Weight: 164.93032

Discovery: Delafontaine 1878 or J.L. Soret 1878 (Switzerland)

Electron Configuration: Xe 4f11 6s2

Element Classification: Rare Earth (Lanthanide)

Word Origin: Holmia, the Latinized name for Stockholm, Sweden.

Holmium Physical Data

Density (g/cc): 8.795

Melting Point (K): 1747

Boiling Point (K): 2968

Appearance: relatively soft, malleable, lustrous, silvery metal

Atomic Radius (pm): 179

Atomic Volume (cc/mol): 18.7

Covalent Radius (pm): 158

Ionic Radius: 89.4 (+3e)

Specific Heat (@20°C J/g mol): 0.164

Evaporation Heat (kJ/mol): 301

Pauling Negativity Number: 1.23

First Ionizing Energy (kJ/mol): 574

Oxidation States: 3

Lattice Structure: Hexagonal

Lattice Constant (Å): 3.580

Lattice C/A Ratio: 1.570

References: Los Alamos National Laboratory (2001), Crescent Chemical Company (2001), Lange's Handbook of Chemistry (1952), CRC Handbook of Chemistry & Physics (18th Ed.)

What is an element?

Return to the Periodic Table