Plutonium atomic mass oxidation number valence density boiling point melting point physical chemical properties the structure of the conductivity the conductivity of the crystal lattice

Plutonium, the properties of atoms, chemical and physical properties.

 

 

 

Pu 94 Plutonium

244,0642 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p6 5f6 7s2

 

Plutonium — an element of the periodic system of chemical elements D. I. Mendeleev, with atomic number 94. Located in the 3rd group (old classification — side subgroup of the third group), the seventh period of the periodic system. Belongs to the group of actinides.

 

General information

Properties of an atom

Chemical properties

Physical properties

Table of chemical elements of D. I. Mendeleev

 


General information

 
Name Plutonium/ Plutonium
Symbol Pu
Room at the table 94
Type Metal
Open G. T. Seaborg, E. M. McMillan, George. B. Kennedy and A. K. Valim, USA, 1940-1941.
Appearance, etc. Heavy radioactive metal brittle silver-white
The contents in the earth’s crust 0 %. Obtained by synthesis.
The contents in the ocean 0 %

Properties of an atom

 
The atomic mass (molar mass) 244,0642 and. E. M. (g/mol)
Electronic configuration 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p6 5f6 7s2
The radius of the atom 162 PM

Chemical properties

 
Oxidation +7, +6, +5, +4, +3, +2, +1
Valence +2, +3, +4
Covalent radius 187±1 PM
The radius of the ion (+4e) 93 (+3e) 108 PM
Radius van der Waals 200 PM
Electronegativity Of 1.28 (Pauling scale)
Energy of ionization (the first electron) 584,7 kJ/mol (of 6.06 eV)
Electrode potential -1,25 V, TO 2.0 V, -1,2 IN

Physical properties

Density (under normal conditions) Of 19.84 g/cm3
Melting point 639,4 °C (912,5 K)
Boiling point 3228 °C (3505 K)
UD. the heat of fusion A 2.8 kJ/mol
UD. heat of evaporation 343,5 kJ/mol
Molar heat capacity 32,77 j/(K·mol)
Molar volume Of 12.12 cm3/mole
The thermal conductivity (at 300 K) 6,74 W/(m·K)
The electrical conductivity in the solid phase 0,67х106 Cm/m
Superconductivity at a temperature of
Hardness
The lattice structure monoclinic
The lattice parameters a = 6,183 Å, b = 4,822 Å, c = 10,963 Å, β = 101,8°
Debye Temperature 162 To

 

Table of chemical elements of D. I. Mendeleev