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Cræftit page wi "{{Infobox element |number=101 |symbol=Md |name=mendelevium |pronounce={{IPAc-en|ˌ|m|ɛ|n|d|ə|ˈ|l|ɛ|v|i|ə|m}} or {{IPAc-en|ˌ|m|ɛ|n|d|ə|ˈ|l|iː|v|i|ə|m}} |pronounce2 ={..."
 
s →top: clean up, replaced: |series=actinide → |category=actinide using AWB
 
(3 intermeediate reveesions bi 2 uisers no shawn)
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|symbol=Md
|symbol=Md
|name=mendelevium
|name=mendelevium
|pronounce={{IPAc-en|ˌ|m|ɛ|n|d|ə|ˈ|l|ɛ|v|i|ə|m}} or {{IPAc-en|ˌ|m|ɛ|n|d|ə|ˈ|l|iː|v|i|ə|m}}
|pronounce={{IPA|ˌ/mɛndəˈɫiviəm/}} or {{IPA|ˌ/mɛndəˈɫɛveəm/}}
|pronounce2 ={{respell|men-də|LEV|ee-əm}} or {{respell|men-də|LIV|ee-əm}}
|pronounce2 ={{respell|men-də|LEV|ee-əm}} or {{respell|men-də|LIV|ay-əm}}
|left=[[fermium]]
|left=[[fermium]]
|right=[[nobelium]]
|right=[[nobelium]]
|above=[[thulium|Tm]]
|above=[[thulium|Tm]]
|below=(Upt)
|below=(Upt)
|series=actinide
|category=actinide
|period=7
|period=7
|block=f
|block=f
Line 16: Line 16:
|electron configuration=&#91;[[radon|Rn]]&#93; 5f<sup>13</sup> 7s<sup>2</sup>
|electron configuration=&#91;[[radon|Rn]]&#93; 5f<sup>13</sup> 7s<sup>2</sup>
|electrons per shell=2, 8, 18, 32, 31, 8, 2
|electrons per shell=2, 8, 18, 32, 31, 8, 2
|phase=solid
|phase=solit
|phase comment=''(predicted)''
|phase comment=''(predictit)''
|melting point K=1100
|melting point K=1100
|melting point C=827
|melting point C=827
Line 26: Line 26:
|number of ionization energies=1
|number of ionization energies=1
|ionization energy 1=635
|ionization energy 1=635
|ionization energy comment=(estimatit)
|ionization energy comment=(estimate)
|CAS number=7440-11-1
|CAS number=7440-11-1
|isotopes=
|isotopes=
{{infobox element/isotopes_decay3 | mn=257 | sym=Md
{{infobox element/isotopes_decay3 | mn=257 | sym=Md
| na=[[synthetic radioisotope|syn]] | hl=[[1 E s|5.52&nbsp;h]]
| na=[[synthetic radioisotope|syn]] | hl=[[1 E s|5.52&nbsp;h]]
| dm1=[[electron capture|ε]] | de1=0.406 | link1=fermium-257 | pn1=257 | ps1=Fm
| dm1=[[electron captur|ε]] | de1=0.406 | link1=fermium-257 | pn1=257 | ps1=Fm
| dm2=[[alpha emission|α]] | de2=7.558 | link2=einsteinium-253 | pn2=253 | ps2=Es
| dm2=[[alpha emission|α]] | de2=7.558 | link2=einsteinium-253 | pn2=253 | ps2=Es
| dm3=[[spontaneous fission|SF]] | de3=– | pn3= | ps3=–}}
| dm3=[[spontaneous fission|SF]] | de3=– | pn3= | ps3=–}}
Line 44: Line 44:
| dm4=[[beta emission|β<sup>−</sup>]] | de4=1.000 | link4=nobelium-260 | pn4=260 | ps4=No}}
| dm4=[[beta emission|β<sup>−</sup>]] | de4=1.000 | link4=nobelium-260 | pn4=260 | ps4=No}}
|isotopes comment=
|isotopes comment=
|naming=after [[Dmitri Mendeleev]]
|naming=efter [[Dmitri Mendeleev]]
|discovered by=[[Lawrence Berkeley Naitional Laboratory]]
|discovered by=[[Lawrence Berkeley Naitional Laboratory]]
|discovery date=1955
|discovery date=1955

Latest reveesion aes o 19:45, 25 Februar 2018

Mendelevium, 101Md
Mendelevium
Pronunciation/ˌmɛndəˈliːviəm/ ​(MEN-də-LEE-vee-əm)
Mass number[258]
Mendelevium in the periodic cairt
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Airn Cobalt Nickel Capper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Siller (element) Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gowd Mercur (element) Thallium Leid (element) Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium
Tm
↑
Md
↓
(Upt)
fermium ← mendelevium → nobelium
Atomic nummer (Z)101
Groupgroup n/a
Periodperiod 7
Blockf-block
Element category  Actinide
Electron confeeguration[Rn] 5f13 7s2
Electrons per shell2, 8, 18, 32, 31, 8, 2
Pheesical properties
Phase at STPsolit (predictit)
Meltin pynt1100 K ​(827 °C, ​1521 °F) (predictit)
Atomic properties
Oxidation states+2, +3
ElectronegativityPauling scale: 1.3
Ionisation energies
  • 1st: 635 kJ/mol
  • (estimate)
Ither properties
Naitural occurrencesynthetic
CAS Nummer7440-11-1
History
Naminefter Dmitri Mendeleev
DiskiveryLawrence Berkeley Naitional Laboratory (1955)
Main isotopes o mendelevium
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct 257Md syn 5.52 h ε 257Fm
α 253Es
SF –
258Md syn 51.5 d ε 258Fm
260Md syn 31.8 d SF –
α 256Es
ε 260Fm
β− 260No
| references
style="text-align:left"|
in calc from C diff report ref
C 827 — —
K 1100 1100 0
F 1521 1521 0
WD Edit this at Wikidata
input C: 827, K: 1100, F: 1521
comment (predictit)

Check temperaturs Md: na inpit for C, K, F.

References

Thir references will appear in the airticle, but this list appears anerly on this page.
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