Mendelevium

Mendelevium (Md)

chemical element with the atomic number of 101 and symbol Md
Atomic Number101
Atomic Weight258
Numri i masës244
Group
Period7
Blockf
protoni101 p+
neutroni143 n0
elektroni101 e-
Animated Bohr model of Md (Mendelevium)

Tipar Fizik

Atomic Radius
molar volume
covalent radius
173 pm
Metallic Radius
ionic radius
109,5 pm
Crystal Radius
123,5 pm
Van der Waals radius
246 pm
density
10,3 g/cm³

Chemical Property

energjia
proton affinity
electron affinity
ionization energy
ionization energy of Md (Mendelevium)
enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
elektroni
electron shell2, 8, 18, 32, 31, 8, 2
Bohr model: Md (Mendelevium)
valence electron2
Lewis structure: Md (Mendelevium)
konfigurimi i elektronit[Rn] 5f13 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f13 7s2
Enhanced Bohr model of Md (Mendelevium)
Orbital Diagram of Md (Mendelevium)
oxidation number2, 3
Elektronegativiteti
Electrophilicity Index
fundamental state of matter
gjendja agregate e materiesSolid
gaseous state of matter
Boiling Point
Melting Point
1 100,15 K
critical pressure
critical temperature
triple point
appearance
Ngjyra
Colorless
appearance
refractive index
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
electrical conductivity
electrical resistivity
Superpërcjellshmëria
Magnetizimi
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
Néel temperature
strukturë
Crystal Structure ()
lattice constant
Lattice Angles
mechanical property
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
Shpejtësia e zërit
klasifikim
CategoryActinides, Actinides
CAS Group
IUPAC Group
Glawe Number45
Mendeleev Number38
Pettifor Number36
Geochemical Class
Goldschmidt classificationsynthetic

other

Gas Basicity
polarizability
109 ± 20 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
Neutron Mass Absorption
numër kuantik2F7/2
space group ()

Isotopes of Mendelevium

Stable Isotopes0
Unstable Isotopes19
Natural Isotopes0

244Md

Numri i masës244
numri i neutroneve143
relative atomic mass
244,081157 ± 0,000402 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
0,36 ± 0,14 s
Spini3
nuclear quadrupole moment
koha e zbulimit apo shpikjes2020
parity+

decay modeintensitet
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)
β+ SF (β+-delayed fission)14%

245Md

Numri i masës245
numri i neutroneve144
relative atomic mass
245,080864 ± 0,000279 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
0,38 ± 0,1 s
Spini7/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1996
parity-

decay modeintensitet
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)

246Md

Numri i masës246
numri i neutroneve145
relative atomic mass
246,081713 ± 0,000279 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
0,92 ± 0,18 s
Spini1
nuclear quadrupole moment
koha e zbulimit apo shpikjes1996
parity-

decay modeintensitet
α (α emission)100%

247Md

Numri i masës247
numri i neutroneve146
relative atomic mass
247,08152 ± 0,000223 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
1,19 ± 0,09 s
Spini7/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1981
parity-

decay modeintensitet
α (α emission)100%
SF (spontaneous fission)0.1%

248Md

Numri i masës248
numri i neutroneve147
relative atomic mass
248,082607 ± 0,000198 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
7 ± 3 s
Spini
nuclear quadrupole moment
koha e zbulimit apo shpikjes1973
parity

decay modeintensitet
β+ (β+ decay; β+ = ϵ + e+)80%
α (α emission)20%
β+ SF (β+-delayed fission)0.05%

249Md

Numri i masës249
numri i neutroneve148
relative atomic mass
249,082857155 ± 0,000176516 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
25,6 ± 0,9 s
Spini7/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1973
parity-

decay modeintensitet
α (α emission)75%
β+ (β+ decay; β+ = ϵ + e+)

250Md

Numri i masës250
numri i neutroneve149
relative atomic mass
250,084164934 ± 0,000097606 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
54 ± 4 s
Spini2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1973
parity-

decay modeintensitet
β+ (β+ decay; β+ = ϵ + e+)93%
α (α emission)7%
β+ SF (β+-delayed fission)0.026%

251Md

Numri i masës251
numri i neutroneve150
relative atomic mass
251,084774287 ± 0,00002031 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
4,21 ± 0,23 m
Spini7/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1973
parity-

decay modeintensitet
β+ (β+ decay; β+ = ϵ + e+)
α (α emission)10%

252Md

Numri i masës252
numri i neutroneve151
relative atomic mass
252,086385 ± 0,000098 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
2,3 ± 0,8 m
Spini1
nuclear quadrupole moment
koha e zbulimit apo shpikjes1973
parity+

decay modeintensitet
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)

253Md

Numri i masës253
numri i neutroneve152
relative atomic mass
253,087143 ± 0,000034 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
12 ± 8 m
Spini7/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1992
parity-

decay modeintensitet
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)0.7%

254Md

Numri i masës254
numri i neutroneve153
relative atomic mass
254,08959 ± 0,000107 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
10 ± 3 m
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1970
parity-

decay modeintensitet
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)

255Md

Numri i masës255
numri i neutroneve154
relative atomic mass
255,091081702 ± 0,000005976 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
27 ± 2 m
Spini7/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1958
parity-

decay modeintensitet
β+ (β+ decay; β+ = ϵ + e+)93%
α (α emission)7%
SF (spontaneous fission)

256Md

Numri i masës256
numri i neutroneve155
relative atomic mass
256,093888 ± 0,000133 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
77,7 ± 1,8 m
Spini1
nuclear quadrupole moment
koha e zbulimit apo shpikjes1955
parity-

decay modeintensitet
β+ (β+ decay; β+ = ϵ + e+)90.8%
α (α emission)9.2%
SF (spontaneous fission)3%

257Md

Numri i masës257
numri i neutroneve156
relative atomic mass
257,095537343 ± 0,000001683 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
5,52 ± 0,05 h
Spini7/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1965
parity-

decay modeintensitet
ϵ (electron capture)85%
α (α emission)15%
SF (spontaneous fission)

258Md

Numri i masës258
numri i neutroneve157
relative atomic mass
258,098433634 ± 0,000003729 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
51,59 ± 0,29 d
Spini8
nuclear quadrupole moment
koha e zbulimit apo shpikjes1970
parity-

decay modeintensitet
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)0.0015%
β (β decay)0.0015%

259Md

Numri i masës259
numri i neutroneve158
relative atomic mass
259,100445 ± 0,000108 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
1,6 ± 0,06 h
Spini7/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1982
parity-

decay modeintensitet
SF (spontaneous fission)100%
α (α emission)

260Md

Numri i masës260
numri i neutroneve159
relative atomic mass
260,10365 ± 0,000339 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
27,8 ± 0,8 d
Spini
nuclear quadrupole moment
koha e zbulimit apo shpikjes1989
parity

decay modeintensitet
SF (spontaneous fission)100%
α (α emission)5%
ϵ (electron capture)5%
β (β decay)3.5%

261Md

Numri i masës261
numri i neutroneve160
relative atomic mass
261,105828 ± 0,000546 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
Spini7/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes
parity-

decay modeintensitet
α (α emission)

262Md

Numri i masës262
numri i neutroneve161
relative atomic mass
262,109144 ± 0,000481 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
Spini
nuclear quadrupole moment
koha e zbulimit apo shpikjes
parity

decay modeintensitet
SF (spontaneous fission)
α (α emission)
Electron shell 101 Mendelevium

historia

zbuluesG.T.Seaborg, S.G.Tompson, A.Ghiorso, K.Street Jr.
vendndodhja e zbulimitUnited States
koha e zbulimit apo shpikjes1955
EtimologjiaNamed in honor of the scientist Dmitri Ivanovitch Mendeleyev, who devised the periodic table.
pronunciationmen-deh-LEE-vi-em (anglisht)

burim

Abundance
Abundance in Earth's crust
natural abundance (Oqeani)
natural abundance (Trupi i njeriut)
0 %
natural abundance (meteoroid)
0 %
natural abundance (Diell)
0 %
Abundance in Universe
0 %

Nuclear Screening Constants