Tantalum

73 hafnium ← tantalum → tungsten Nb ↑ Ta ↓ Db Tabel périodik
Katrangan Umum Unsur
Jeneng, Lambang, Nomer atom	tantalum, Ta, 73
Dhèrèt kimia	transition metals
Golongan, Période, Blok	5, 6, d
Panampilan	gray blue
Massa atom	180.94788(2) g/mol
Konfigurasi elektron	[Xe] 4f14 5d3 6s2
Cacahing èlèktron saben kulit	2, 8, 18, 32, 11, 2
Ciri-ciri fisik
Fase	solid
Massa jenis (watara suhu kamar)	16.69 g/cm³
Massa jenis cair ing titik lebur	15 g/cm³
Titik lebur	3290 K (3017 °C, 5463 °F)
Titik umob	5731 K (5458 °C, 9856 °F)
Kalor peleburan	36.57 kJ/mol
Kalor panguapan	732.8 kJ/mol
Kapasitas kalor	(25 °C) 25.36 J/(mol·K)
Tekanan uap P/Pa 1 10 100 1 k 10 k 100 k ing T/K 3297 3597 3957 4395 4939 5634
Ciri-ciri atom
Struktur kristal	cubic body centered
Bilangan oksidasi	5, 4, 3 (mildly acidic oxide)
Elektronegativitas	1.5 (skala Pauling)
Energi ionisasi	pisanan: 761 kJ/mol
	ke-2: 1500 kJ/mol
Jari-jari atom	145 pm
Jari-jari atom (terhitung)	200 pm
Jari-jari kovalen	138 pm
Lain-lain
Sifat magnetik	no data
Resistivitas listrik	(20 °C) 131 nΩ·m
Konduktivitas termal	(300 K) 57.5 W/(m·K)
Ekspansi termal	(25 °C) 6.3 µm/(m·K)
Kecepatan suara (pada wujud kawat)	(20 °C) 3400 m/s
Modulus Young	186 GPa
Modulus rigiditas	69 GPa
Modulus ruah	200 GPa
Nisbah Poisson	0.34
Skala Mohs	6.5
Kakerasan Vickers	873 MPa
Kekerasan Brinell	800 MPa
Nomor CAS	7440-25-7
Isotop
iso NA waktu paruh DM DE (MeV) DP 177Ta syn 56.56 h ε 1.166 177Hf 178Ta syn 2.36 h ε 1.910 178Hf 179Ta syn 1.82 a ε 0.110 179Hf 180Ta syn 8.125 h ε 0.854 180Hf 180Ta syn 8.125 h β- 0.708 180W 180mTa 0.012% >1.2×1015 y (not observed) ε 0.929 180Hf β- 0.783 180W IT 0.075 180Ta 181Ta 99.988% Ta stabil kanthi 108 neutron 182Ta syn 114.43 d β- 1.814 182W 183Ta syn 5.1 d β- 1.070 183W
Referensi

Tantalum (uniné /ˈtæntələm/) (biyèn diaranai tantalium /tænˈtæliəm/) iku unsur kimia kanthi lambang Ta lan nomer atom 73.

Rujukan

• Los Alamos National Laboratory - Tantalum Archived 2010-01-11 at the Wayback Machine.
• T.I.C. industry site Archived 2008-05-09 at the Wayback Machine. - Tantalum uses, ore mining and extraction
• R. Cohen (2006). Applications of porous tantalum in total hip arthroplasty. Journal of the American Academy of Orthopaedic Surgeons, 14:646-655.

Pranala njaba

Wiktionary

Pirsani informasi ngenani Tantalum ing KamusWiki.

• WebElements.com - Tantalum Archived 2008-04-04 at the Wayback Machine.
• Tantalum-Niobium International Study Center

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