Rubidyo

Rubidium
37Rb
K ↑ Rb ↓ Cs Periodic table krypton ← rubidium → strontium
Panagway
grey white
Kinatibuk-ang mga kinaiya
Ngalan, simbolo, kaiphan	rubidium, Rb, 37
Paglitok	/rᵿˈbɪdiəm/ [[Help:Pronunciation respelling key|roo-Plantilya:Smallcaps all-ee-əm]]
Kategoriyang elemento	puthaw
Group, period, block	1, 5, s
Gibug-aton sa atomo	85.4678(3)
Kontorno sa elektron	[Kr] 5s1 2, 8, 18, 8, 1 Electron shells of rubidium (2, 8, 18, 8, 1)
History
Pagkadiskobre	Robert Bunsen and Gustav Kirchhoff (1861)
First isolation	George de Hevesy
Physical properties
Phase	magahi
Density (near r.t.)	1.532 g·cm−3
Liquid density at m.p.	1.46 g·cm−3
Melting point	312.46 K, 39.31 °C, 102.76 °F
Boiling point	961 K, 688 °C, 1270 °F
Critical point	(extrapolated) 2093 K, 16 MPa
Heat of fusion	2.19 kJ·mol−1
Heat of vaporization	75.77 kJ·mol−1
Molar heat capacity	31.060 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 434 486 552 641 769 958
Atomic properties
Oxidation states	1 (strongly basic oxide)
Electronegativity	0.82 (Pauling scale)
Ionization energies	1st: 403 kJ·mol−1
	2nd: 2632.1 kJ·mol−1
	3rd: 3859.4 kJ·mol−1
Atomic radius	248 pm
Covalent radius	220±9 pm
Van der Waals radius	303 pm
Miscellanea
Crystal structure	body-centered cubic
Magnetic ordering	paramagnetic
Electrical resistivity	(20 °C) 128 nΩ·m
Thermal conductivity	58.2 W·m−1·K−1
Speed of sound (thin rod)	(20 °C) 1300 m·s−1
Young's modulus	2.4 GPa
Bulk modulus	2.5 GPa
Mohs hardness	0.3
Brinell hardness	0.216 MPa
CAS registry number	7440-17-7
Most stable isotopes
Main article: Isotopes of rubidium
iso NA half-life DM DE (MeV) DP 83Rb syn 86.2 d ε 83Kr γ - 84Rb syn 32.9 d ε 84Kr β+ 84Kr γ - β− 84Sr 86Rb syn 18.65 d β− 86Sr γ - 87Rb 27.835% 4.88Plantilya:E y β− 87Sr

Ang rubidyo (Iningles rubidium) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Rb ug kaiphan nga atomik 37. Ang rubidyo mao ang puthaw.

Galeriya sa hulagway

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