Amerisyo

Americium, ₉₅Am
Americium
Bigkas	/ˌæməˈrɪsiəm/ (AM-ə-RISS-ee-əm)
Appearance	silvery white
Bilang na pangmasa	[243]
Americium sa talahanayang peryodiko
	plutonium ← americium → curium
Atomikong bilang (Z)	95
Group	n/a
Period	7
Block	f-block
Electron configuration	[Rn] 5f7 7s2
Electrons per shell	2, 8, 18, 32, 25, 8, 2
Physical properties
Phase at STP	solido
Melting point	1449 K (1176 °C, 2149 °F)
Boiling point	2880 K (2607 °C, 4725 °F) (calculated)
Density (near r.t.)	12 g/cm3
Heat of fusion	14.39 kJ/mol
Molar heat capacity	28 J/(mol·K)
Atomic properties
Oxidation states	+2, +3, +4, +5, +6, +7 (isang anpoterong oksido)
Electronegativity	Pauling scale: 1.3
Ionization energies	1st: 578 kJ/mol ; ;
Atomic radius	empirical: 173 pm
Covalent radius	180±6 pm
	Mga linyang espektral ng americium
Other properties
Natural occurrence	sintetiko
Crystal structure	double hexagonal close-packed (dhcp)
Thermal conductivity	10 W/(m⋅K)
Electrical resistivity	0.69 µΩ⋅m
Magnetic ordering	paramagnetic
Molar magnetic susceptibility	+1000.0×10−6 cm3/mol
CAS Number	7440-35-9
History
Naming	after the Americas
Discovery	Glenn T. Seaborg, Ralph A. James, Leon O. Morgan, Albert Ghiorso (1944)
Isotopes of americium t; b;
SF	–
α	238Np
SF	–
SF	–
	Kategorya: Americium; tingnan; usapan; baguhin; \| references

Ang americium o amerisyo (Kastila: americio, may sagisag na Am, atomikong bilang na 95, espesipikong grabidad na 11.7, at balensiyang 3, 4, 5, at 6). Isa itong elementong metaliko, maputi, at trans-uraniko, na kabilang sa serye ng aktinido. Nagtataglay ito ng mga isotopong may bilang ng masa mula 237 hanggang 246. Mayroon itong mga hating-buhay^{[t 1]} mula 25 mga minuto hanggang 7,950 taon. Sa pananaliksik, pinagmumulan ito ng mga sinag-alpa,^{[t 2]} partikular na ang mga isotopong Am 241 at Am 243. Natuklasan ito nina Glenn Theodore Seaborg, Leon O. Morgan, Ralph A. James, Stanley G. Thompson, at Albert Ghiorso noong 1945.^[4]

Talababa

↑ Ingles: half-life
↑ Ingles: alpha particle

Mga sanggunian

↑ ^1.0 ^1.1 Muller, W.; Schenkel, R.; Schmidt, H. E.; Spirlet, J. C.; McElroy, D. L.; Hall, R. O. A.; Mortimer, M. J. (1978). "The electrical resistivity and specific heat of americium metal". Journal of Low Temperature Physics. 30 (5–6): 561. Bibcode:1978JLTP...30..561M. doi:10.1007/BF00116197.{{cite journal}}: CS1 maint: date auto-translated (link)
↑ Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.{{cite book}}: CS1 maint: date auto-translated (link)
↑ Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.{{cite journal}}: CS1 maint: date auto-translated (link)
↑ Gaboy, Luciano L. Americium, amerisyum, amerisyo - Gabby's Dictionary: Praktikal na Talahuluganang Ingles-Filipino ni Gabby/Gabby's Practical English-Filipino Dictionary, GabbyDictionary.com.

[4] Ingles: half-life

[5] Ingles: alpha particle

[res-1] 1.0 ^1.1 Muller, W.; Schenkel, R.; Schmidt, H. E.; Spirlet, J. C.; McElroy, D. L.; Hall, R. O. A.; Mortimer, M. J. (1978). "The electrical resistivity and specific heat of americium metal". Journal of Low Temperature Physics. 30 (5–6): 561. Bibcode:1978JLTP...30..561M. doi:10.1007/BF00116197.{{cite journal}}: CS1 maint: date auto-translated (link)

[2] Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.{{cite book}}: CS1 maint: date auto-translated (link)

[NUBASE2020-3] Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.{{cite journal}}: CS1 maint: date auto-translated (link)

[Gaboy-6] Gaboy, Luciano L. Americium, amerisyum, amerisyo - Gabby's Dictionary: Praktikal na Talahuluganang Ingles-Filipino ni Gabby/Gabby's Practical English-Filipino Dictionary, GabbyDictionary.com.

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