Holmium

Holmium General

Name:Holmium	Symbol:Ho
Type:Rare Earth, Lanthanides	Atomic weight:164.9304
Density @ 293 K: 8.80 g/cm3	Atomic volume:18.7 cm3/mol
Discovered: 1879

Holmium States

State (s, l, g):solid
Melting point:1743.2 K	Boiling point:2873 K

Holmium Energies

Specific heat capacity:0.16 J/gK	Heat of atomization:301 kJ/mole atoms
Heat of fusion:12.20 kJ/mol	Heat of vaporization :241.0 kJ/mol
1st ionization energy:241.0 kJ/mol	2nd ionization energy:1139 kJ/mole
3rd ionization energy:2204 kJ/mole	Electron affinity:50 kJ/mole

Holmium Oxidation & Electrons

Shells:2,8,18,29,8,2	Electron configuration:[Xe] 4f11 6s2
Minimum oxidation number:0	Maximum oxidation number:3
Min. common oxidation no.:0	Max. common oxidation no.:3
Electronegativity (Pauling Scale):1.23	Polarizability volume:23.6 Å3

Holmium Appearance & Characteristics

Structure:hcp: hexagonal close pkd	Color:silvery-white
Hardness:mohs
Harmful effects:
Characteristics:   Uses:  alloys

Holmium Reactions

Reaction with air:vigorous, => Ho2O3	Reaction with 6 M HCl:mild, => H2, HoCl3
Reaction with 15 M HNO3:mild, => Ho(NO3)3	Reaction with 6 M NaOH:

Holmium Compounds

Oxide(s):Ho2O3	Chloride(s):HoCl3
Hydride(s):HoH2 HoH3

Holmium Radius

Atomic radius:176 pm	Ionic radius (1+ ion):pm
Ionic radius (2+ ion):pm	Ionic radius (3+ ion):104.1 pm
Ionic radius (2- ion):pm	Ionic radius (1- ion):pm

Holmium Conductivity

Thermal conductivity:16.2 J/m-sec-deg

Electrical conductivity:11.4 1/mohm-cm

Holmium Abundance & Isotopes

Abundance earth's crust:0.1 log

Abundance solar system:-1.051 log

Cost, pure:$1722 per 100g

Cost, bulk:$/100g

Source: Monazite(phosphate),bastnaesite

Isotopes: 1

Holmium Other

Other:

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