Mendelevij (Md)

chemical element with the atomic number of 101 and symbol Md

Atomski broj	101
Relativna atomska masa	258
Maseni broj	244

Skupina
Perioda	7
Blok	f

proton	101 p⁺
neutron	143 n⁰
elektron	101 e^-

Animated Bohrov model atoma of Md (Mendelevij)

Physical Property

Atomski Radijus
Molni volumen
Kovalentni Radijus	173 pm 139 pm
Metallic Radius
Ionski radijus	109,5 pm
Crystal Radius	123,5 pm
Van der Waals radius	246 pm 327,4 pm
gustoća	10,3 g/cm³

Kemijsko Svojstvo

{ERROR}

energija

proton affinity
Elektronski afinitet
ionization energy	6,58 eV/particle 10 eV/particle 24,3 eV/particle 40 eV/particle 54,1 eV/particle 76 eV/particle 96 eV/particle 115,1 eV/particle 143,9 eV/particle 162 eV/particle 187 eV/particle 215 eV/particle 240 eV/particle 260 eV/particle 282 eV/particle 307 eV/particle 334 eV/particle 360 eV/particle 386 eV/particle 412 eV/particle 438 eV/particle 462 eV/particle 486 eV/particle 659 eV/particle 690 eV/particle 723 eV/particle 760 eV/particle 794 eV/particle 828 eV/particle 885 eV/particle 920 eV/particle 958 eV/particle 994 eV/particle 1.160 eV/particle 1.200 eV/particle 1.250 eV/particle 1.290 eV/particle 1.430 eV/particle 1.480 eV/particle 1.620 eV/particle 1.660 eV/particle 1.840 eV/particle 1.930 eV/particle 2.020 eV/particle 2.110 eV/particle 2.200 eV/particle 2.290 eV/particle 2.380 eV/particle 2.000 eV/particle 2.580 eV/particle 2.680 eV/particle 2.760 eV/particle 2.860 eV/particle 2.950 eV/particle 3.050 eV/particle 3.513 eV/particle 3.592 eV/particle 3.675 eV/particle 3.762 eV/particle 3.845 eV/particle 3.926 eV/particle 4.109 eV/particle 4.194 eV/particle 4.286 eV/particle 4.371 eV/particle 4.720 eV/particle 4.800 eV/particle 4.890 eV/particle 4.970 eV/particle 5.580 eV/particle 5.680 eV/particle 5.930 eV/particle 6.030 eV/particle 9.430 eV/particle 9.620 eV/particle 9.810 eV/particle 10.020 eV/particle 10.220 eV/particle 10.410 eV/particle 10.930 eV/particle 11.130 eV/particle 11.360 eV/particle 11.560 eV/particle 12.140 eV/particle 12.310 eV/particle 12.500 eV/particle 12.680 eV/particle 14.560 eV/particle 14.800 eV/particle 15.200 eV/particle 15.400 eV/particle 31.000 eV/particle 31.500 eV/particle 32.000 eV/particle 32.500 eV/particle 39.500 eV/particle 40.100 eV/particle 41.000 eV/particle 41.548 eV/particle 164.764 eV/particle

Toplina isparivanja
toplina taljenja
standard enthalpy of formation
elektron

Elektronska ljuska	2, 8, 18, 32, 31, 8, 2

valence electron	2 ⓘ

electron configuration	[Rn] 5f¹³ 7s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 5f¹³ 7s²

Oksidacijski broj	2, 3
Elektronegativnost	0.23542
Electrophilicity Index
fundamental state of matter

agregatno stanje
gaseous state of matter
Vrelište
Talište	1.100,15 K
critical pressure
critical temperature
Trojna točka
appearance
boja	Crna #ffffff #b30da6 #b30da6
appearance
Indeks prelamanja
thermodynamic material property
Toplinska vodljivost
Toplinsko istezanje
molar heat capacity
Specifični toplinski kapacitet
heat capacity ratio
electrical properties
type
electrical conductivity
Električna otpornost i provodnost
Supravodljivost
Magnetizam
type
Magnetna susceptibilnost (Mass)
Magnetna susceptibilnost (Molar)
Magnetna susceptibilnost (Volume)
magnetic ordering
Curieva temperatura
Néel temperature
struktura
Kristalna struktura	{ERROR}
lattice constant
Lattice Angles
mechanical property
Tvrdoća
bulk modulus
shear modulus
Youngov modul elastičnosti
Poissonov omjer
brzina zvuka
classification
Kategorija	Aktinoidi, Actinides
CAS Group
IUPAC Group
Glawe Number	45
Mendeleev Number	38
Pettifor Number	36
Geochemical Class
Goldschmidt classification	synthetic

other

Gas Basicity
polarizability	109 ± 20 a₀
C6 Dispersion Coefficient
allotrope
Nuklearni udarni presjek
Neutron Mass Absorption
Kvantni brojevi	2F7/2
space group	()

Isotopes of Mendelevium

Stabilni izotopi	0
Nestabilni izotopi	19
Natural Isotopes	0

²⁴⁴Md

Maseni broj	244
neutron number	143
Relativna Atomska Masa	244,081157 ± 0,000402 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	0,36 ± 0,14 s
spin	3
nuclear quadrupole moment
vrijeme otkrića ili izuma	2020
Parnost	+

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

²⁴⁵Md

Maseni broj	245
neutron number	144
Relativna Atomska Masa	245,080864 ± 0,000279 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	0,38 ± 0,1 s
spin	7/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1996
Parnost	-

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

²⁴⁶Md

Maseni broj	246
neutron number	145
Relativna Atomska Masa	246,081713 ± 0,000279 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	0,92 ± 0,18 s
spin	1
nuclear quadrupole moment
vrijeme otkrića ili izuma	1996
Parnost	-

decay mode	intensity
α (α emission)	100%

²⁴⁷Md

Maseni broj	247
neutron number	146
Relativna Atomska Masa	247,08152 ± 0,000223 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	1,19 ± 0,09 s
spin	7/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1981
Parnost	-

decay mode	intensity
α (α emission)	100%
SF (spontaneous fission)	0.1%

²⁴⁸Md

Maseni broj	248
neutron number	147
Relativna Atomska Masa	248,082607 ± 0,000198 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	7 ± 3 s
spin
nuclear quadrupole moment
vrijeme otkrića ili izuma	1973
Parnost

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

²⁴⁹Md

Maseni broj	249
neutron number	148
Relativna Atomska Masa	249,082857155 ± 0,000176516 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	25,6 ± 0,9 s
spin	7/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1973
Parnost	-

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

²⁵⁰Md

Maseni broj	250
neutron number	149
Relativna Atomska Masa	250,084164934 ± 0,000097606 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	54 ± 4 s
spin	2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1973
Parnost	-

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

²⁵¹Md

Maseni broj	251
neutron number	150
Relativna Atomska Masa	251,084774287 ± 0,00002031 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	4,21 ± 0,23 m
spin	7/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1973
Parnost	-

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

²⁵²Md

Maseni broj	252
neutron number	151
Relativna Atomska Masa	252,086385 ± 0,000098 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	2,3 ± 0,8 m
spin	1
nuclear quadrupole moment
vrijeme otkrića ili izuma	1973
Parnost	+

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

²⁵³Md

Maseni broj	253
neutron number	152
Relativna Atomska Masa	253,087143 ± 0,000034 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	12 ± 8 m
spin	7/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1992
Parnost	-

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

²⁵⁴Md

Maseni broj	254
neutron number	153
Relativna Atomska Masa	254,08959 ± 0,000107 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	10 ± 3 m
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1970
Parnost	-

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

²⁵⁵Md

Maseni broj	255
neutron number	154
Relativna Atomska Masa	255,091081702 ± 0,000005976 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	27 ± 2 m
spin	7/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1958
Parnost	-

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

²⁵⁶Md

Maseni broj	256
neutron number	155
Relativna Atomska Masa	256,093888 ± 0,000133 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	77,7 ± 1,8 m
spin	1
nuclear quadrupole moment
vrijeme otkrića ili izuma	1955
Parnost	-

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

²⁵⁷Md

Maseni broj	257
neutron number	156
Relativna Atomska Masa	257,095537343 ± 0,000001683 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	5,52 ± 0,05 h
spin	7/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1965
Parnost	-

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

²⁵⁸Md

Maseni broj	258
neutron number	157
Relativna Atomska Masa	258,098433634 ± 0,000003729 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	51,59 ± 0,29 d
spin	8
nuclear quadrupole moment
vrijeme otkrića ili izuma	1970
Parnost	-

decay mode	intensity
α (α emission)	100%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	0.0015%
β⁻ (β⁻ decay)	0.0015%

²⁵⁹Md

Maseni broj	259
neutron number	158
Relativna Atomska Masa	259,100445 ± 0,000108 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	1,6 ± 0,06 h
spin	7/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1982
Parnost	-

decay mode	intensity
SF (spontaneous fission)	100%
α (α emission)

²⁶⁰Md

Maseni broj	260
neutron number	159
Relativna Atomska Masa	260,10365 ± 0,000339 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	27,8 ± 0,8 d
spin
nuclear quadrupole moment
vrijeme otkrića ili izuma	1989
Parnost

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

²⁶¹Md

Maseni broj	261
neutron number	160
Relativna Atomska Masa	261,105828 ± 0,000546 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	7/2
nuclear quadrupole moment
vrijeme otkrića ili izuma
Parnost	-

decay mode	intensity
α (α emission)

²⁶²Md

Maseni broj	262
neutron number	161
Relativna Atomska Masa	262,109144 ± 0,000481 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin
nuclear quadrupole moment
vrijeme otkrića ili izuma
Parnost

decay mode	intensity
SF (spontaneous fission)
α (α emission)

povijest

otkrio/izumio	G.T.Seaborg, S.G.Tompson, A.Ghiorso, K.Street Jr.
location of discovery	United States
vrijeme otkrića ili izuma	1955
Etimologija	Named in honor of the scientist Dmitri Ivanovitch Mendeleyev, who devised the periodic table.
pronunciation	men-deh-LEE-vi-em (engleski)

source

Obilnost
Zastupljenost u Zemljinoj kori
natural abundance (ocean)
natural abundance (tijelo)	0 %
natural abundance (meteoroid)	0 %
natural abundance (Sunce)	0 %
Zastupljenost u svemiru	0 %

Nuclear Screening Constants

Mendelevij on ChemicalAid

Mendelevij (Md)

Physical Property

Kemijsko Svojstvo

other

Isotopes of Mendelevium

244Md

245Md

246Md

247Md

248Md

249Md

250Md

251Md

252Md

253Md

254Md

255Md

256Md

257Md

258Md

259Md

260Md

261Md

262Md

povijest

source

Nuclear Screening Constants

²⁴⁴Md

²⁴⁵Md

²⁴⁶Md

²⁴⁷Md

²⁴⁸Md

²⁴⁹Md

²⁵⁰Md

²⁵¹Md

²⁵²Md

²⁵³Md

²⁵⁴Md

²⁵⁵Md

²⁵⁶Md

²⁵⁷Md

²⁵⁸Md

²⁵⁹Md

²⁶⁰Md

²⁶¹Md

²⁶²Md