Chemical Properties of terbium (CAS 7440-27-9)

InChI

InChI=1S/Tb

InChI Key

GZCRRIHWUXGPOV-UHFFFAOYSA-N

Formula

Tb

SMILES

[Tb]

Molecular Weight¹

158.93

CAS

7440-27-9

• IE : Ionization energy (eV).
• P_vap : Vapor pressure (kPa).
• ¹: Molecular weight from the IUPAC atomic weights tables.

Physical Properties

Property	Value	Unit	Source
IE	[5.80; 5.98]	eV
IE	5.86 ± 0.00	eV	NIST
IE	5.86	eV	NIST
IE	5.86 ± 0.00	eV	NIST
IE	5.86 ± 0.00	eV	NIST
IE	5.86 ± 0.00	eV	NIST
IE	5.80 ± 0.10	eV	NIST
IE	5.89 ± 0.04	eV	NIST
IE	5.85 ± 0.02	eV	NIST
IE	Outlier 5.98 ± 0.02	eV	NIST

Correlations

Property	Value	Unit	Temperature (K)	Source
Pvap	[1.00e-03; 101.33]	kPa	[1789.25; 3503.15]	The Yaw...
Equation			ln(Pvp) = A + B/(T + C)
Coefficient A			1.50656e+01
Coefficient B			-3.41349e+04
Coefficient C			-2.35780e+02
Temperature range, min.			1789.25
Temperature range, max.			3503.15
Pvap	1.00e-03	kPa	1789.25	Calculated Property
Pvap	0.01	kPa	1979.68	Calculated Property
Pvap	0.08	kPa	2170.12	Calculated Property
Pvap	0.37	kPa	2360.55	Calculated Property
Pvap	1.38	kPa	2550.98	Calculated Property
Pvap	4.23	kPa	2741.42	Calculated Property
Pvap	11.07	kPa	2931.85	Calculated Property
Pvap	25.53	kPa	3122.28	Calculated Property
Pvap	53.08	kPa	3312.72	Calculated Property
Pvap	101.33	kPa	3503.15	Calculated Property

Sources

• Thermodynamic stability of RNi2 Laves phases
• Investigation in the variation of Gibbs energy of formation of RE6UO12 (RE = La, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Tm, Yb, Lu) along the 4f series
• NIST Webbook
• The Yaws Handbook of Vapor Pressure

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Outlier This icon means that the value is more than 2 standard deviations away from the property mean.