Difference between revisions of "Mendelevium"

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{{Infobox element
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|name = mendelevium
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|symbol = Md
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|left = [[fermium]]
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|right = [[nobelium]]
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|above = [[Thulium|Tm]]
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|below = –
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|atomic-number = 101
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|configuration = [Rn] 5f<sup>13</sup> 7s<sup>2</sup>
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|phys-ref = <ref name="H&G"/><ref group="note" name="est">Many of the properties of mendelevium are only known through estimation and/or extrapolation.</ref>
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|melting-point =
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|density =
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|chem-ref = <ref>{{Pauling3rd|pages=88–95}}.</ref><ref group="note" name="est"/>
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|electronegativity = 1.3 (Pauling)
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|IE-ref =
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|IE1 = ''see text''
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|radius-ref = <ref name="David"/><ref>{{citation | last1 = Brüchle | first1 = W. | last2 = Schädel | first2 = M. | last3 = Scherer | first3 = U. W. | last4 = Kratz | first4 = J. V. | last5 =  Gregorich | first5 = K. E. | last6 = Lee | first6 = D. | last7 = Nurmia | first7 = M. | last8 = Chasteler | first8 = R. M. | last9 = Hall | first9 = H. L. | last10 = Henderson | first10 = R. A. | last11 = Hoffman | first11 = D. C. | year = 1988 | title = The hydration enthalpies of Md<sup>3+</sup> and Lr<sup>3+</sup> | journal =  Inorg. Chim. Acta | volume = 146 | issue = 2 | pages = 267–76 | doi = 10.1016/S0020-1693(00)80619-2}}.</ref><ref group="note" name="est"/>
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|metallic-radius = 194(10) pm
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|ionic-radius =
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|thermo-ref = <ref name="H&G"/>
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|enthalpy-vaporization = 134–142 kJ mol<sup>−1</sup>
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|entropy-atomization =
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|misc-ref =
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|CAS-number = 7440-11-1
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}}
 
'''Mendelevium''' (symbol: '''Md''') is a synthetic [[chemical element]] and a member of the [[actinoid]] series. It cannot be formed by [[neutron]] bombardment in a nuclear reactor, but must instead be produced in [[particle accelerator]]s. Mendelevium cannot be produced in macroscopic quantities.
 
'''Mendelevium''' (symbol: '''Md''') is a synthetic [[chemical element]] and a member of the [[actinoid]] series. It cannot be formed by [[neutron]] bombardment in a nuclear reactor, but must instead be produced in [[particle accelerator]]s. Mendelevium cannot be produced in macroscopic quantities.
  

Revision as of 10:30, 5 April 2011

fermium ← mendelevium → nobelium
Tm
↑
Md
↓
–
Atomic properties
Atomic number 101
Electron configuration [Rn] 5f13 7s2
Chemical properties[1][note 1]
Electronegativity 1.3 (Pauling)
Ionization energy
see text
Atomic radii[2][3][note 1]
Metallic radius 194(10) pm
Thermodynamic properties[4]
Enthalpy change of vaporization 134–142 kJ mol−1
Miscellaneous
CAS number 7440-11-1
Where appropriate, and unless otherwise stated, data are given for 100 kPa (1 bar) and 298.15 K (25 °C).
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Mendelevium (symbol: Md) is a synthetic chemical element and a member of the actinoid series. It cannot be formed by neutron bombardment in a nuclear reactor, but must instead be produced in particle accelerators. Mendelevium cannot be produced in macroscopic quantities.

Notes and references

Notes

  1. ↑ 1.0 1.1 Cite error: Invalid <ref> tag; no text was provided for refs named est

References

  1. ↑ Pauling, Linus The Nature of the Chemical Bond, 3rd ed.; Ithaca, NY, 1960; pp 88–95. ISBN 0-8014-0333-2.
  2. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named David
  3. ↑ Brüchle, W.; Schädel, M.; Scherer, U. W.; Kratz, J. V.; Gregorich, K. E.; Lee, D.; Nurmia, M.; Chasteler, R. M., et al. The hydration enthalpies of Md3+ and Lr3+. Inorg. Chim. Acta 1988, 146 (2), 267–76. DOI: 10.1016/S0020-1693(00)80619-2.
  4. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named H&G

External links

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