Sodio

Sodium
11Na
Li ↑ Na ↓ K Periodic table neon ← sodium → magnesium
Appearance
silvery white metallic Spectral lines of sodium
General properties
Name, simbolo, kaiphan	sodium, Na, 11
Pronunciation	Plantilya:IPAc-en Plantilya:Respell
Element category	puthaw
Group, period, block	1, 3, s
Standard atomic weight	22.98976928(2)
Electron configuration	[Ne] 3s1 2,8,1
History
Discovery	Humphry Davy (1807)
First isolation	Humphry Davy (1807)
Physical properties
Phase	magahi
Density (near r.t.)	0.968 g·cm−3
Liquid density at m.p.	0.927 g·cm−3
Melting point	370.87 K, 97.72 °C, 207.9 °F
Boiling point	1156 K, 883 °C, 1621 °F
Critical point	(extrapolated) 2573 K, 35 MPa
Heat of fusion	2.60 kJ·mol−1
Heat of vaporization	97.42 kJ·mol−1
Molar heat capacity	28.230 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 554 617 697 802 946 1153
Atomic properties
Oxidation states	+1, -1 (strongly basic oxide)
Electronegativity	0.93 (Pauling scale)
Ionization energies (more)	1st: 495.8 kJ·mol−1
	2nd: 4562 kJ·mol−1
	3rd: 6910.3 kJ·mol−1
Atomic radius	186 pm
Covalent radius	166±9 pm
Van der Waals radius	227 pm
Miscellanea
Crystal structure	body-centered cubic
Magnetic ordering	paramagnetic
Electrical resistivity	(20 °C) 47.7 nΩ·m
Thermal conductivity	142 W·m−1·K−1
Thermal expansion	(25 °C) 71 µm·m−1·K−1
Speed of sound (thin rod)	(20 °C) 3200 m·s−1
Young's modulus	10 GPa
Shear modulus	3.3 GPa
Bulk modulus	6.3 GPa
Mohs hardness	0.5
Brinell hardness	0.69 MPa
CAS registry number	7440-23-5
Most stable isotopes
Main article: Isotopes of sodium
iso NA half-life DM DE (MeV) DP 23Na 100% 23Na is stable with 12 neutrons

Ang sodio (Iningles sodium) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Na ug kaiphan nga atomik 11. Ang sodio mao ang puthaw.

Galeriya sa hulagway

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