RUTHERFORDIUM, Rf (104)

Rutherfordium is a synthetic element (an element created in a laboratory but is not found in nature) and radioactive. The most stable known isotope is 267Rf and has a half-life of 1.3 hours. In the 1960s, small amounts of rutherfordium were produced in laboratories in the former Soviet Union and in California.

ELEMENT BRIEF

1964 by Workers at the Nuclear Institute at Dubna and the University of California, Berkeley, USA.

DISCOVERY

From the name of Lord “Rutherford”, physicist and chemist from New Zealand.

ETYMOLOGY

Rutherfordium

ELEMENT

Rf

SYMBOL

104

ATOMIC NUMBER

53850-36-5

CAS NUMBER

ELEMENTAL SPECTRUM

-

ELEMENTAL COLOUR

-

REFRACTIVE INDEX

-

POISSON RATIO

11.514 cm³

MOLAR VOLUME

-

BRINELL HARDNESS

-

MOHS HARDNESS

-

VICKERS HARDNESS

-

SPEED OF SOUND

-

BULK MODULUS

-

SHEAR MODULUS

-

YOUNG MODULUS

ALLOTROPES

NONE

1,900.15 K, 1,627.00 °C

MELTING POINT

-

BOILING POINT

-

AUTOMATIC IGNITION

-

FLASHPOINT

-

CRITICAL TEMPERATURE

-

CRITICAL PRESSURE

-

THERMAL CONDUCTIVITY

-

THERMAL EXPANSION

-

SPECIFIC HEAT

-

HEAT FUSION

-

HEAT VAPORISATION

-

HEAT COMBUSTION

-

CURIE POINT

-

NEEL POINT

-

ADIABATIC INDEX

Solid

PHASE

-

ELECTRICAL TYPE

-

CONDUCTIVITY

-

RESISTIVITY

-

SUPERCONDUCTING POINT

-

MAGNETIC TYPE

-

MASS SUSCEPTIBILITY

-

MOLAR SUSCEPTIBILITY

-

VOLUME SUSCEPTIBILITY

Transition Metal

CLASSIFICATION

267.121'790'0

ATOMIC WEIGHT

-

ATOMIC RADIUS

157 pm

COVALENT RADIUS SINGLE BOND

140 pm

COVALENT RADIUS DOUBLE BOND

131 pm

COVALENT RADIUS TRIPLE BOND

150 pm

VAN DER WAALS RADIUS

[Rn]7s²5f¹⁴7p²

ELECTRON CONFIGURATION

Hexagonal, Close Packed Single

CRYSTAL STRUCTURE

23.200'00 g/cm³

DENSITY AS SOLID

-

DENSITY AS LIQUID

-

DENSITY AS GAS

-

SPACE GROUP NAME

-

SPACE GROUP NUMBER

-

LATTICE ANGLES

-

LATTICE CONSTANTS

3

VALENCE

-

ELECTRONEGATIVITY

-

ELECTRON AFFINITY

IONISATION ENERGY