de en fr hr it es
Neighborhood
Yb
70
Lu
71
Hf
72
No
102
Lr
103
Rf
104
 
 
 

 

Periodic table

de  German

Lawrencium

en  English

Lawrencium

fr  French

Lawrencium

hr  Croatian

Lawrencij

it  Italian

Lawrentio

es  Spanish

Lawrencio

 

Lr
Lr
Lawrencium

PERIODIC TABLE OF THE ELEMENTS

LAWRENCIUM

TRANSITION ELEMENT:
ACTINIDE

 

Atomic number:103

Group numbers:3

Period:7

Electronic configuration:[Rn] 5f14 6d1 7s2

Formal oxidation number:+3

Electronegativities:-

Atomic radius / pm:-

Relative atomic mass:[262]

 

Lawrencium was discovered by Albert Ghiorso, Torbjorn Sikkeland, Almon E. Larsh, and Robert M. Latimer (US) in 1961. Named in honour of Ernest O. Lawrence, inventor of the cyclotron. It is a synthetic radioactive metal. Lawrencium was produced by bombarding a mixture of three isotopes of californium with boron-10 and boron-11 ions. Eight isotopes of lawrencium have been synthesized to date, with the longest-lived being lawrencium-256, which has a half-life of about 30 seconds.

PHYSICAL PROPERTIES

Density / g dm-3:-

Molar volume / cm3mol-1:-

Electrical resistivity / μΩcm:- (20 °C)

THERMAL PROPERTIES

Thermal conductivity / W m-1K-1:-

Melting point / °C:-

Boiling point / °C:-

Heat of fusion / kJ mol-1:-

Heat of vaporization / kJ mol-1:-

Heat of atomization / kJ mol-1:308

IONIZATION ENERGIES

First ionization energy / kJ mol-1:-

Second ionization energy / kJ mol-1:-

Third ionization energy / kJ mol-1:-

ABUNDANCE OF ELEMENTS

in the atmosphere / ppm:-

in the Earth's crust / ppm:-

in the oceans / ppm:-

CRYSTALLOGRAPHIC DATA

 -

Crystal structure:

-

Unit-cell dimensions / pm:

-

Space group:

-

ISOTOPES

IsotopeRelative atomic massMass percent (%)

REDUCTION POTENTIALS

Balanced half-reaction Eo / V

 

102 Nobelium <=
103 Lawrencium
=> 104 Rutherfordium