FLEROVIUM, Fl (114)

Flerovium is an extremely radioactive synthetic element. About 90 atoms of flerovium have been observed: 58 were synthesized directly, and the rest were made from the radioactive decay of heavier elements and have been shown to have mass numbers from 284 to 289. The most stable known flerovium isotope, flerovium-289, has a half-life of 2.6 seconds and it is possible that this isotope may have a nuclear isomer with a longer half-life of 66 seconds.

ELEMENT BRIEF

1999 by Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory.

DISCOVERY

From the name of the Flerov Laboratory of Nuclear Reactions.

ETYMOLOGY

Flerovium

ELEMENT

Fl

SYMBOL

114

ATOMIC NUMBER

54085-16-4

CAS NUMBER

ELEMENTAL SPECTRUM

-

ELEMENTAL COLOUR

-

REFRACTIVE INDEX

-

POISSON RATIO

20.656 cm³

MOLAR VOLUME

-

BRINELL HARDNESS

-

MOHS HARDNESS

-

VICKERS HARDNESS

-

SPEED OF SOUND

-

BULK MODULUS

-

SHEAR MODULUS

-

YOUNG MODULUS

ALLOTROPES

NONE

-

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

Basic Metal

CLASSIFICATION

289.190'420'0

ATOMIC WEIGHT

-

ATOMIC RADIUS

143 pm

COVALENT RADIUS SINGLE BOND

-

COVALENT RADIUS DOUBLE BOND

-

COVALENT RADIUS TRIPLE BOND

180

VAN DER WAALS RADIUS

[Rn]7s²5f¹⁴6d¹⁰7p²

ELECTRON CONFIGURATION

Cubic, Face-centred

CRYSTAL STRUCTURE

14.000'00 g/cm³

DENSITY AS SOLID

-

DENSITY AS LIQUID

-

DENSITY AS GAS

-

SPACE GROUP NAME

-

SPACE GROUP NUMBER

-

LATTICE ANGLES

-

LATTICE CONSTANTS

-

VALENCE

-

ELECTRONEGATIVITY

-

ELECTRON AFFINITY

IONISATION ENERGY