Teknesyo

Technetium
43Tc
Mn ↑ Tc ↓ Re Periodic table molybdenum←technetium→ruthenium
Panagway
shiny gray metal Thin gray sheet of metal, with a dull shine, encased in a glass tube
Kinatibuk-ang mga kinaiya
Ngalan,simbolo,kaiphan	technetium, Tc, 43
Paglitok	/tɛkˈniːʃiəm/ [[Help:Pronunciation respelling key|tek-Plantilya:Smallcaps all-shee-əm]]
Kategoriyang elemento	puthaw nga transisyon
Group,period,block	7,5,d
Gibug-aton sa atomo	[98]
Kontorno sa elektron	[Kr] 4d55s2 2, 8, 18, 13, 2 Electron shells of technetium (2, 8, 18, 13, 2)
History
Prediction	Dmitri Mendeleev(1871)
Pagkadiskobre	Carlo PerrierandEmilio Segrè(1937)
First isolation	Carlo Perrier and Emilio Segrè(1937)
Physical properties
Phase	magahi
Density(nearr.t.)	11 g·cm−3
Melting point	2430K, 2157 °C, 3915 °F
Boiling point	4538 K, 4265 °C, 7709 °F
Heat of fusion	33.29kJ·mol−1
Heat of vaporization	585.2 kJ·mol−1
Molar heat capacity	24.27 J·mol−1·K−1
Vapor pressure(extrapolated)
P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 2727 2998 3324 3726 4234 4894
Atomic properties
Oxidation states	7,6, 5,4,3,2, 1,-1, -3 (stronglyacidicoxide)
Electronegativity	1.9 (Pauling scale)
Ionization energies	1st: 702 kJ·mol−1
	2nd: 1470 kJ·mol−1
	3rd: 2850 kJ·mol−1
Atomic radius	136pm
Covalent radius	147±7pm
Miscellanea
Crystal structure	hexagonal
Magnetic ordering	Paramagnetic
Thermal conductivity	50.6 W·m−1·K−1
Speed of sound(thin rod)	(20 °C) 16,200 m·s−1
CAS registry number	7440-26-8
Most stable isotopes
Main article:Isotopes of technetium
iso NA half-life DM DE(MeV) DP 95mTc syn 61d ε - 95Mo γ 0.204, 0.582, 0.835 - IT 0.0389,e 95Tc 96Tc syn 4.3d ε - 96Mo γ 0.778, 0.849, 0.812 - 97Tc syn 2.6×106y ε - 97Mo 97mTc syn 91d IT 0.965, e 97Tc 98Tc syn 4.2×106y β− 0.4 98Ru γ 0.745, 0.652 - 99Tc trace 2.111×105y β− 0.294 99Ru 99mTc syn 6.01h IT 0.142, 0.002 99Tc γ 0.140 -

Angteknesyo(Ininglestechnetium) mao angelementong kimikosatalaang peryodikonga may simbolo ngaTcug kaiphan nga atomik 43. Ang teknesyo mao angputhaw nga transisyon.

Galeriya sa hulagway

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