Amerisium

Americium (uniné /ˌæməˈrɪsiəm/) iku unsur kimia kanthi simbul Am lan nomer atom 95. Minangka siji èlemèn logam radioaktif, amerisium iku aktinida kang tinemu ing taun 1944 kanthi ngebom plutonium nganggo neutron lan minangka èlemèn transuranik kapapat kang tinemu. Unsur iki dijenengaké saka tembungAmérika, kanthi analogi karo Europium.

95 plutonium ← americium → curium Eu ↑ Am ↓ (Uqp) Tabel périodik
Katrangan Umum Unsur
Jeneng, Lambang, Nomer atom	americium, Am, 95
Dhèrèt kimia	actinides
Golongan, Periode, Blok	n/a, 7, f
Rupa	silvery white sometimes yellow
Massa atom	(243) g/mol
Konfigurasi elektron	[Rn] 5f7 7s2
Cacahing èlèktron saben kulit	2, 8, 18, 32, 25, 8, 2
Ciri-ciri fisik
Fase	solid
Massa jenis (watara suhu kamar)	12 g/cm³
Titik lebur	1449 K (1176 °C, 2149 °F)
Titik umob	2880 K (2607 °C, 4725 °F)
Kalor peleburan	14.39 kJ/mol
Kapasitas kalor	(25 °C) 62.7 J/(mol·K)
Tekanan uap P/Pa 1 10 100 1 k 10 k 100 k ing T/K 1239 1356
Ciri-ciri atom
Struktur kristal	hexagonal
Bilangan oksidasi	6, 5, 4, 3 (amphoteric oxide)
Elektronegativitas	1.3 (skala Pauling)
Energi ionisasi	pertama: 578 kJ/mol
Jari-jari atom	175 pm
Lain-lain
Sifat magnetik	no data
Konduktivitas termal	(300 K) 10 W/(m·K)
Nomor CAS	7440-35-9
Isotop
iso NA waktu paruh DM DE (MeV) DP 241Am syn 432.2 y SF - - α 5.638 237Np 242mAm syn 141 y IT 0.049 - α 5.637 238Np SF - - 243Am syn 7370 y SF - - α 5.438 239Np
Referensi

Rujukan

• WebElements.com - Americium

Wacan

• Nuclides and Isotopes - 14th Edition, GE Nuclear Energy, 1989.
• Patent Cithakan:US patent reference
• Gabriele Fioni, Michel Cribier and Frédéric Marie. "Can the minor actinide, americium-241, be transmuted by thermal neutrons?". Commissariat à l'énergie atomique. Diarsip saka sing asli ing 2007-11-11. Dibukak ing 2008-04-19.
• Terry Kammash, David L. Galbraith, and Ta-Rong Jan (January 10, 1993). "An americium-fueled gas core nuclear rocket". AIP Conf. Proc. Tenth symposium on space nuclear power and propulsion. Vol. 271. kc. 585–589. doi:10.1063/1.43073.{{cite conference}}: CS1 maint: multiple names: authors list (link)

Pranala njaba

Wikimedia Commons duwé médhia ngenani Americium.

Wiktionary

Pirsani informasi ngenani Amerisium ing KamusWiki.

• Los Alamos National Laboratory - Americium Archived 2007-08-13 at the Wayback Machine.
• Guide to the Elements - Revised Edition, Albert Stwertka, (Oxford University Press; 1998) ISBN 0-19-508083-1
• It's Elemental - Americium
• ATSDR - Public Health Statement: Americium

Golongan →

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

Période ↓

1

1 H

2 He

2

3 Li

4 Be

5 B

6 C

7 N

8 O

9 F

10 Ne

3

11 Na

12 Mg

13 Al

14 Si

15 P

16 S

17 Cl

18 Ar

4

19 K

20 Ca

21 Sc

22 Ti

23 V

24 Cr

25 Mn

26 Fe

27 Co

28 Ni

29 Cu

30 Zn

31 Ga

32 Ge

33 As

34 Se

35 Br

36 Kr

5

37 Rb

38 Sr

39 Y

40 Zr

41 Nb

42 Mo

43 Tc

44 Ru

45 Rh

46 Pd

47 Ag

48 Cd

49 In

50 Sn

51 Sb

52 Te

53 I

54 Xe

6

55 Cs

56 Ba

*

71 Lu

72 Hf

73 Ta

74 W

75 Re

76 Os

77 Ir

78 Pt

79 Au

80 Hg

81 Tl

82 Pb

83 Bi

84 Po

85 At

86 Rn

7

87  Fr

88 Ra

**

103 Lr

104 Rf

105 Db

106 Sg

107 Bh

108 Hs

109 Mt

110 Ds

111 Rg

112 Cn

113 Nh

114 Fl

115 Mc

116 Lv

117 Ts

118 Og

* Lantanida

57 La

58 Ce

59 Pr

60 Nd

61 Pm

62 Sm

63 Eu

64 Gd

65 Tb

66 Dy

67 Ho

68 Er

69 Tm

70 Yb

** Aktinida

89 Ac

90 Th

91 Pa

92 U

93 Np

94 Pu

95 Am

96 Cm

97 Bk

98 Cf

99 Es

100 Fm

101 Md

102 No

Seri Kimia saka Tabel Périodik

Logam alkali	Alkali tanah	Lantanida	Aktinida	Logam transisi
Logam	Metaloid	Nonlogam	Halogen	Gas mulia